Que- Find the missing term: 3, 4, 7, 7, 13, 13, 21, 22, 31, 34, ?
a. 42
b. 43
c. 51
d. 52
Answer- 43
Explanation- The given sequence is a combination of two series: I. 3, 7, 13, 21, 31, ? and II. 4, 7, 13, 22, 34 The pattern in I is + 4, + 6, + 8, + 10,...... The pattern in II is + 3, + 6, + 9, + 12,.............. So, missing term = 31 + 12 = 43
Que- Find the missing term : 90, 180, 12, 50, 100, 200, ?, 3, 50, 4, 25, 2, 6, 30, 3
a. 150
b. 175
c. 225
d. 250
Answer- 150
Explanation- Clearly, 90 = 30 × 3, 180 = 6 × 30, 12 = 2 × 6, 50 = 25 × 2, 100 = 4 × 25, 200 = 50 × 4 So, missing term = 3 × 50 = 150
Que- In the series 10, 17, 24, 31, 38,...... which of the following will be a number of the series ?
a. 48
b. 346
c. 574
d. None
Answer- 346
Explanation- The given series consists of numbers each of which, on dividing by 7, leaves a remainder 3, No other number except 346 satisfies the property.
Que- Find the missing term: 13, 32, 24, 43, 35, ?, 46, 65, 57, 76
a. 45
b. 52
c. 54
d. 55
Answer- 54
Explanation- The given sequence is a combination of two series: I. 13, 24, 35, 46, 57 and II. 32, 43, ?, 65, 76 The pattern in both I and II is + 11 So, missing term = 43 + 11 = 54
Que- Find the missing term: 4/9, 9/20, ? , 39/86
a. 17/40
b. 19/42
c. 20/45
d. 29/53
Answer- 19/42
Explanation- The sequence in the numerators is + 5, + 10, + 20, ......and that in the denominators is + 11, + 22, + 44,............ So, the numerator of the missing fraction should be (9 + 10)i.e., 19 and the denominator should be (20 + 22)i.e., 42. Thus, the missing term is 19/42 .
Que- Find the missing term: 0, 4, 6, 3, 7, 9, 6, ?, 12
a. 8
b. 10
c. 11
d. None
Answer- 10
Explanation- The given sequence is a combination of three series: I. 0, 3, 6 II. 4, 7, ? III. 6, 9, 12 The pattern in each of these series is + 3 So, missing term = 7 + 3 = 10
Que- In the series 3, 9, 15,.............what will be the 21st term?
a. 117
b. 121
c. 123
d. None
Answer- 123
Explanation- Clearly, 3 + 6 = 9, 9 + 6 = 15,............. So, the series is an A.P in which a = 3 and d = 6 ∴21st term = a + (21 - 1)d = a + 20d = 3 +20 × 6 = 123.
Que- In the series 2, 6, 18, 54, ...., what will be the 8th term ?
a. 4370
b. 4374
c. 7443
d. 7434
Answer- 4374
Explanation- Clearly, 2 × 3 = 6, 6 × 3 = 18, 18 × 3 = 54,.............. S, the series is a G.P. in which a = 2, r = 3 ∴8th term = ar(8 - 1)= ar7 = 2 × 37 = (2 × 2187) = 4374
Que- Find the missing term: 2, 1, 2, 4, 4, 5, 6, 7, 8, 8, 10, 11, ?
a. 9
b. 10
c. 11
d. None
Answer- 10
Explanation- The given sequence is a combination of three series: I. 1st, 4th, 7th, 10th, 13th terms i.e., 2, 4, 6, 8, ? II. 2nd, 5th, 8th, 11th terms i.e., 1, 4, 7, 10 III. 3rd, 6th, 9th, 12th terms i.e., 2, 5, 8, 11 Clearly, I. consists of consecutive even numbers. So, the missing term is 10.
Que- Find the missing number: 111/9, 121/2, 142/7, 162/3, ?
a. 81/3
b. 191/2
c. 20
d. 221/3
Answer- 20
Explanation- The given sequence is 100/9 , 25/2 , 100/7 , 50/3, ............i.e., 100/9, 100/8, 100/7, 100/6................. So, missing term = 100/5 = 20
Que- Find the missing term: 8, 9, 8, 7, 10, 9, 6, 11, 10, ?, 12
a. 5
b. 7
c. 8
d. None
Answer- 5
Explanation- The given sequence is a combination of three series: I. 1st, 4th, 7th, 10th, terms i.e., 8, 7, 6, ? II. 2nd, 5th, 8th, 11th terms i.e.,9, 10, 11, 12 III. 3rd, 6th, 9th, terms i.e., 8, 9, 10 The pattern in I. is - 1 So, the missing term is = 6 - 1 = 5
Que- Which term of the series 5, 8, 11, 14, ....is 320 ?
a. 104th
b. 105th
c. 106th
d. 64th
Answer- 106th
Explanation- Clearly, 5 + 3 = 8, 8 + 3 = 11, 11 + 3 = 14,................ So, the series in an A.P. in which a = 5 and d = 3 Let 320 be the nth term of the series. Then, 320 = 5 + (n - 1) × 3 or (n - 1) = 105 or n = 106
Que- Find the missing term: 1, 9, 25, 49, ?, 121
a. 64
b. 81
c. 91
d. None
Answer- 81
Explanation- The given series consists of squares of consecutive odd numbers i.e., 12 , 32 , 52 , 72,.......... So. missing term = 92 = 81
Que- Find the missing term: 4, 6, 9, 131/2, ?
a. 171/2
b. 19
c. 201/4
d. 223/4
Answer- 201/4
Explanation- The pattern is × 3/2. So, missing number = 131/2 × 3/2 = 27/2 × 3/2 = 81/4 = 201/4.
Que- Find out the wrong term: 0, 2, 3, 5, 8, 10, 15, 18, 24, 26, 35
a. 18
b. 24
c. 26
d. None
Answer- 18
Explanation- The given sequence is a combination of two series: I. 0, 3, 8, 15, 24, 35 and II. 2, 5, 10, 18, 26 The pattern in both I and II is + 3, + 5, + 7, + 9, ......... So, in II. 18 is wrong and must be replaced by (10 + 7) i.e., 17.
Que- Find out the wrong term: 196, 169, 144, 121, 101
a. 101
b. 121
c. 169
d. None
Answer- 101
Explanation- The sequence is (14)2 , (13)2 , (12)2 , (11)2 , (10)2 .......... So, 101 is wrong and must be replaced by (10)2 i.e., 100
Que- Find out the wrong term: 2, 5, 10, 50, 500, 5000
a. 5
b. 10
c. 50
d. 5000
Answer- 5000
Explanation- Each term of the series is the product of the preceding two terms. So, 5000 is wrong and must be replaced by (50 × 500) = i.e., 25000
Que- Find out the wrong term:3, 10, 27, 4, 16, 64, 5, 25, 125
a. 3
b. 4
c. 10
d. 27
Answer- 10
Explanation- The correct sequence is 3, 32 , 33,4, 42 , 43,5, 52 , 53 So. 10 is wrong and must replaced by 32 i.e., 9
Que- Find out the wrong term: 46080, 3840, 384, 48, 24, 2, 1
a. 384
b. 48
c. 24
d. 2
Answer- 24
Explanation- The correct pattern is ÷ 12, ÷ 10, ÷ 8, ÷ 6,......... So, 24 is wrong and must be replaced by (48 ÷ 6) i.e., 8.
Que- Find out the wrong term: 25, 36, 49, 81, 121, 169, 225
a. 36
b. 49
c. 169
d. 225
Answer- 36
Explanation- The correct sequence is 52 , 72 , 92 , 112 , 132 , 152. So, 36 is wrong.
Que- Find out the wrong term: 5, 10, 40, 80, 320, 550, 2560
a. 80
b. 320
c. 550
d. 2560
Answer- 550
Explanation- The correct pattern is ×2, ×4, ×2, ×4 . . . . . . So, 550 is wrong and must be replaced by (320 × 2) i.e., 640
Que- Find out the wrong term: 2, 5, 10, 17, 26, 37, 50, 64
a. 17
b. 26
c. 37
d. 64
Answer- 64
Explanation- The term of the series are (12 + 1)(22 + 1)(32 + 1)(42 + 1)(52 + 1)(62 + 1)(72 + 1),.............. So, 64 is wrong and must be replaced by (82 + 1) i.e., 65
Que- Find out the wrong term: 3, 7, 15, 39, 63, 127, 255, 511
a. 15
b. 39
c. 63
d. None
Answer- 39
Explanation- The correct pattern is × 2 + 1. So, 39 is wrong and must be replaced by (15 × 2 + 1) i.e., 31.
Que- Find out the wrong term: 5, 27, 61, 122, 213, 340, 509
a. 27
b. 61
c. 122
d. 509
Answer- 27
Explanation- The terms of the series are (23 - 3), (33 - 3), (43 - 3), (53 - 3), (63 - 3), (73 -3), (83 -3). So, 27 is wrong and must be replaced (33 - 3) i.e., 24
Que- Find out the wrong term: 6, 15, 35, 77, 165, 221
a. 35
b. 77
c. 165
d. 221
Answer- 165
Explanation- The terms of the series are product of two consecutive prime numbers i.e., (2 × 3), (3 × 5), (5 × 7), (7 × 11),........... So, 165 is wrong and must be replaced by (11 × 13) i.e., 143.
Que- Find out the wrong term: 121, 143, 165, 186, 209
a. 143
b. 165
c. 186
d. 209
Answer- 186
Explanation- Each term in the series is obtained by adding 22 to the preceding term. So, 186 is wrong and must be replaced by (165 + 22) i.e., 187.
Que- Find out the wrong term: 24576, 6144, 1536, 386, 96, 24
a. 96
b. 386
c. 1536
d. 6144
Answer- 386
Explanation- Each term of the series is obtained by dividing the preceding term by 4. So, 1536 is wrong and must be replaced by (1536 ÷ 4) i.e., 384.
Que- Find out the wrong term: 16, 22, 30, 45, 52, 66
a. 30
b. 45
c. 52
d. 66
Answer- 45
Explanation- The correct pattern is + 6, + 8, + 10, + 12, + 14. So, 45 is wrong and must be replaced by (30 + 10) i.e., 40.
Que- Find out the wrong term: 8, 14, 26, 48, 98, 194, 386
a. 14
b. 48
c. 98
d. None
Answer- 48
Explanation- The correct pattern is × 2, - 2....... So, 48 is wrong and must be replaced by (26 × 2 - 2) i.e., 50.
Que- Find out the wrong term: 8, 13, 21, 32, 47, 63, 83
a. 13
b. 21
c. 32
d. 47
Answer- 47
Explanation- The correct pattern is + 5, + 8, + 11, + 14, ............ So, 47 is wrong and must be replaced by (32 + 14) i.e., 46
Que- Find out the wrong term: 10, 26, 74, 218, 654, 1946, 5834
a. 26
b. 74
c. 218
d. 654
Answer- 654
Explanation- The correct pattern is × 3, - 4,............ So, 654 is wrong and must be replaced by (218 × 3 - 4) i.e., 650.
Que- Find out the wrong term: 4, 10, 22, 46, 96, 190, 382
a. 4
b. 10
c. 96
d. 382
Answer- 96
Explanation- The correct pattern is + 6, + 12, + 24, + 48, + 96, + 192 ............ So, 96 is wrong and must be replaced by (46 + 48) i.e., 94
Que- Find out the wrong term: 1, 3, 10, 21, 64, 129, 356, 777
a. 21
b. 129
c. 10
d. 356
Answer- 356
Explanation- The correct pattern is × 2 + 1, × 3 + 1, × 2 + 1, × 3 + 1,........... So, 356 is wrong and must be replaced by (129 × 3 + 1) i.e., 388.
Que- Find out the wrong term: 1, 2, 4, 8, 16, 32, 64, 96,
a. 4
b. 32
c. 64
d. 96
Answer- 96
Explanation- Each term of the series is obtained by multiplying the preceding term by 2. So, 96 is wrong and must be replaced by (64 × 2) i.e., 128.
Que- Find out the wrong term: 15, 16, 22, 29, 45, 70
a. 16
b. 22
c. 45
d. 70
Answer- 22
Explanation- The correct pattern is + 1, + 4, + 9, + 16, + 25 i.e., + 12 , + 22 , + 32 , + 42 , + 52. So, 22 is wrong and must be replaced by (16 + 4) i.e., 20.
Que- Find out the wrong term: 105, 85, 60, 30, 0, - 45, - 90
a. 105
b. 60
c. 0
d. -45
Answer- 0
Explanation- The correct pattern is - 20, - 25, - 30, ............ So, 0 is wrong and must be replaced by (30 - 35) i.e., - 5.
Que- Find out the wrong term: 56, 58, 62, 70, 84, 118, 182
a. 58
b. 62
c. 84
d. None
Answer- 84
Explanation- The correct pattern is + 2, + 4, + 8, + 16, + 32, + 64 i,e., + 2, + 22 , + 23 , + 24 , + 25 , + 26. So, 84 is wrong and must be replaced by (70 + 16) i.e., 86.
Que- Find out the wrong term: 325, 259, 202, 160, 127, 105, 94
a. 94
b. 127
c. 202
d. 259
Answer- 202
Explanation- The correct pattern is - 66, - 55, - 44, - 33, - 22, - 11. So, 202 is wrong and must be replaced by (259 - 55) i.e., 204.
Que- Find out the wrong term: 3, 4, 10, 32, 136, 685, 4116
a. 10
b. 32
c. 136
d. 4116
Answer- 32
Explanation- The correct pattern is × 1 + 1, × 2 + 2, × 3 + 3, × 4 + 4, .......... So, 32 is wrong and must be replaced by (10 × 3 + 3) i.e., 33.
Que- Find out the wrong term: 380, 188, 92, 48, 20, 8, 2
a. 8
b. 20
c. 48
d. None
Answer- 48
Explanation- The correct pattern is - 192, - 96, - 48, - 24, - 12, - 6. So, 48 is wrong and must be replaced by (92 - 48) i.e., 44.
Que- Find out the wrong term: 2, 6, 24, 96, 285, 568, 567
a. 6
b. 24
c. 285
d. 567
Answer- 24
Explanation- The correct pattern is ×6 -6, ×5 -5, ×4 -4, ×3 -3, . . . . . So, 24 is wrong and must be replaced by (6 × 5 - 5) i.e., 25
Que- Find out the wrong term: 89, 78, 86, 80, 85, 82, 83
a. 83
b. 82
c. 86
d. 78
Answer- 86
Explanation- The correct pattern is - 11, + 9, - 7, + 5, - 3 + 1. So, 86 is wrong and must be replaced by (78 + 9) i.e., 87.
Que- Find out the wrong term: 1, 5, 9, 15, 25, 37, 49
a. 9
b. 15
c. 25
d. 37
Answer- 15
Explanation- The terms of the given series are 12 , (22 + 1), 32 , (42 + 1), 52 , (62 + 1), 72 So, 15 is wrong and must be replaced by (42 + 1) i.e., 17.
Que- Find out the wrong term: 445, 221, 109, 46, 25, 11, 4
a. 25
b. 46
c. 109
d. 221
Answer- 46
Explanation- 3 is subtracted from each number and the result divided by 2 to obtain the next number of the series, So, 46 is wrong and must be replaced by (109 - 3)/2 i.e., 53.
Que- Find out the wrong term: 11, 5, 20, 12, 40, 26, 74, 54
a. 5
b. 20
c. 40
d. 26
Answer- 40
Explanation- The given sequence is a combination of two series: I: 11, 20, 40, 74 and II: 5, 12, 26, 54 The correct pattern in I: is + 9, + 18, + 36,..... So, 40 is wrong and must be replaced by (20 + 18) i.e., 38.
Que- Find out the wrong term: 93, 309, 434, 498, 521, 533
a. 309
b. 434
c. 498
d. 521
Answer- 521
Explanation- The correct pattern is + 63 , + 53 , + 43 , + 33 , ............ So, 521 is wrong and must be replaced by (498 + 33 ) i.e., 525.
Que- Find out the wrong term: 1, 5, 5, 9, 7, 11, 11, 15, 12, 17
a. 11
b. 12
c. 17
d. None
Answer- 12
Explanation- The given sequence is a combination of two series : I: 1, 5, 7, 11, 12 and II: 5, 9, 11, 15, 17 The pattern in both I and II is + 4, + 2, + 4, + 2, So, 12 is wrong and must be replaced by (11 + 2) i.e., 13.
Que- Find out the wrong term: 1, 3, 12, 25, 48
a. 3
b. 12
c. 25
d. 48
Answer- 25
Explanation- The terms of the series are (12 - 0), (22 - 12 ), (42 - 22 ), (62 - 32 ), and (82 - 42 ), So, 25 is wrong and must be replaced by (62 - 32) i.e., 27.
Que- Find out the wrong term: 2, 3, 4, 4, 6, 8, 9, 12, 16
a. 3
b. 6
c. 9
d. None
Answer- 9
Explanation- The given sequence is a combination of three series: I: 1st, 4th, 7th terms i.e., 2, 4, 9..... II: 2nd, 5th, 8th terms i.e.,3, 6, 12....... III: 3rd, 6th, 9th terms i.e., 4, 8, 16.................. In each one of I, II and III, each term is twice the preceding term. So, 9 is wrong and must be replaced by (4 × 2) i.e., 8.
Que- Find out the wrong term: 3, 2, 8, 9, 13, 22, 18, 32, 23, 42
a. 8
b. 9
c. 13
d. 22
Answer- 9
Explanation- The given sequence is a combination of two series: I: 3, 8, 13, 18, 23 and II: 2, 9, 22, 32, 42 The pattern in I: is + 5, and the pattern in II: is + 10 So, in II, 9 is wrong and must be replaced by (2 + 10) i.e., 12.
Que- Find out the wrong term: 1236, 2346, 3456, 4566, 5686
a. 1236
b. 3456
c. 4566
d. 5686
Answer- 5686
Explanation- The correct pattern in the series is + 1110. So, 5686 is wrong and must be replaced by (4566 + 1110) i.e., 5676.
Que- In a given series one term is wrong or missing term: 1, 5, 14, 30, 55, 93
a. 97
b. 95
c. 93
d. 55
Answer- 93
Explanation- The correct pattern is + 4, + 9, + 16, + 25,+ 36 i.e., + 22, + 32 , + 42 , + 52 , + 62 So, 93 is wrong and must be replaced by (55 + 36) i.e., 91.
Que- In a given series one term is wrong or missing term: 1, 2, 5, 10, 17, 28
a. 30
b. 28
c. 27
d. None
Answer- 28
Explanation- The correct sequence is + 1, + 3, + 5, + 7, + 9. So, 28 is wrong and must be replaced by (17 + 9) i.e., 26.
Que- In a given series one term is wrong or missing term: 0, 3, 8, 15, 24, 33
a. 8
b. 15
c. 26
d. 33
Answer- 33
Explanation- The correct pattern is + 3, + 5, + 7, + 9, + 11. So, 33 is wrong and must be replaced by (24 + 11) i.e., 35.
Que- In a given series one term is wrong or missing term: 2, 3, 5, 8, 13, 34
a. 21
b. 25
c. 29
d. 34
Answer- 21
Explanation- Clearly, each term of the series is the sum of the preceding two terms. Now, 8 + 13 = 21 and 13 + 21 = 34. So, the term 21 is missing.
Que- In a given series one term is wrong or missing term: 1, 5, 11, 19, 29, 55
a. 55
b. 41
c. 29
d. None
Answer- 41
Explanation- The correct sequence is + 4, + 6, + 8, + 10, ............ So, next term after 29 = 29 + 12 = 41. The term after 41 will then be (41 + 14) i.e., 55. ∴ 41 is missing.
Que- Find the missing term : 4, 6, 10, 16, 24, ?
a. 40
b. 34
c. 30
d. 28
Answer- 34
Explanation- 1st term : 4 2nd term : 4 + 2 = 6 3rd term : 6 + 4 = 10 4th term : 10 + 6 = 16 5th term : 16 + 8 = 24 So, 6th term : 24 + 10 = 34
Que- Find the missing term: 36, 34, 30, 28, 24, ?
a. 20
b. 23
c. 22
d. 26
Answer- 22
Explanation- According to the given question:
Que- Find the missing term : 3, 5, 9, 17, ?
a. 33
b. 42
c. 26
d. 65
Answer- 33
Explanation- 1st term : 3 2nd term : 3 + 2 = 5 3rd term : 5 + 4 = 9 4th term : 9 + 8 = 17 So, 5th term : 17 + 16 = 33
Que- Find the missing term :9*2 : 9*9 : : 9*5 : ?
a. 9*4
b. 9*6
c. 9*7
d. 9*8
Answer- 9*6
Explanation- 9 × 2 : 9 × 9 : : 9 × 5 : ? 18 : 81 : : 45 : 9 × 6 So. 9 × 6 will come in place of question mark.
Que- Find the missing term : 1, 0, 3, 2, 5, 6, ?, 12, 9, 20
a. 9
b. 10
c. 7
d. 8
Answer- 7
Explanation- There are two series in the given question. 1st series: 1, 3, 5, 7, 9 ... ( each next term are generated by adding 2) 2nd series: 0, 2, 6, 12, 20 ... ( each next term are generated by adding 2n [where n=1,2,3,4...])
Que- Find the missing term : 5, 16, 51, 158, ?
a. 1452
b. 483
c. 481
d. None
Answer- 481
Explanation- The series is as follows: 5 × 3 + 1 = 16 16 × 3 + 3 = 51 51 × 3 + 5 = 158 158 × 3 + 7= 481
Que- Find the missing term : 3, 5, 35, 10, 12, 35, _ , _
a. 19 , 35
b. 17, 19
c. 19, 24
d. 22, 35
Answer- 17, 19
Explanation- Every 3rd multiple of the given series is constant and the rest of the series is as follow as showing in below image
Que- Find the missing term : 7, 8, 18, 57, ?, 1165
a. 174
b. 232
c. 224
d. 228
Answer- 232
Explanation- 7 × 1 + 1 = 8 8 × 2 + 2 = 18 18 × 3 + 3 = 57 57 × 4 + 4 = 232 232 × 5 + 5 = 1165
Que- 120, 99, 80, 63, 48, ?
a. 35
b. 38
c. 39
d. 40
Answer- 35
Explanation- The pattern is - 21, - 19, - 17, - 15,..... So, missing term = 48 - 13 = 35.
Que- 589654237, 89654237, 8965423, 965423, ?
a. 58965
b. 65423
c. 89654
d. 96542
Answer- 96542
Explanation- The digits are removed one by one from the beginning and the end in order alternately so as to obtain the subsequent terms of the series.
Que- In the series 2, 6, 18, 54, ...... what will be the 8th term ?
a. 4370
b. 4374
c. 7443
d. 7434
Answer- 4374
Explanation- Clearly, 2 x 3 = 6, 6 x 3 = 18, 18 x 3 = 54,..... So, the series is a G.P. in which a = 2, r = 3. Therefore 8th term = ar8-1 = ar7 = 2 x 37 = (2 x 2187) = 4374.
Que- 1, 1, 4, 8, 9, 27, 16, ?
a. 32
b. 64
c. 81
d. 256
Answer- 64
Explanation- " The series consists of squares and cubes of consecutive natural numbers i.e. 12, 13, 22, 23, 32, 33, 42, ..... So, missing term = 43 = 64. "
Que- 6, 13, 25, 51, 101, ?
a. 201
b. 202
c. 203
d. 205
Answer- 203
Explanation- The pattern is x 2 + 1, x 2 - 1, x 2 + 1, x 2 - 1,..... So, missing term = 101 x 2 + 1 = 203.
Que- 5, 6, 9, 15, ?, 40
a. 21
b. 25
c. 27
d. 33
Answer- 25
Explanation- The pattern is + 1, + 3, + 6,....., i.e. + 1, + (1, + 2), + (1 + 2 + 3),..... So, missing term = 15 + (1 + 2 + 3 + 4) = 25.
Que- 1, 3, 4, 8, 15, 27, ?
a. 37
b. 44
c. 50
d. 55
Answer- 50
Explanation- The sum of any three consecutive terms of the series gives the next term. So, missing number = 8 + 15 + 27 = 50.
Que- 3, 4, 7, 7, 13, 13, 21, 22, 31, 34, ?
a. 42
b. 43
c. 51
d. 52
Answer- 43
Explanation- The given sequence is a combination of two series : I. 3, 7, 13, 21, 31, ? and II. 4, 7, 13, 22, 34 The pattern in I is + 4, + 6, + 8, + 10,..... The pattern in II is + 3, + 6, + 9, + 12,..... So, missing term = 31 + 12 = 43.
Que- 6, 12, 21, ?, 48
a. 33
b. 38
c. 40
d. 45
Answer- 33
Explanation- The pattern is + 6, + 9, + 12, + 15, ..... So, missing term = 21 + 12 = 33.
Que- 2, 3, 3, 5, 10, 13, ?, 43, 172, 177
a. 23
b. 38
c. 39
d. 40
Answer- 39
Explanation- The pattern is + 1, x 1, + 2, x 2, + 3, x 3, + 4, x 4, + 5. So, missing term = 13 x 3 = 39.
Que- 13, 32, 24, 43, 35, ?, 46, 65, 57, 76
a. 45
b. 52
c. 54
d. 55
Answer- 54
Explanation- The given sequence is a combination of two series: I. 13, 24, 35, 46, 57 and II. 32, 43, ?, 65, 76 The pattern in both I and II is + 11. So, missing term = 43 + 11 = 54.
Que- 22, 24, 28, ?, 52, 84
a. 36
b. 38
c. 42
d. 46
Answer- 36
Explanation- The pattern is + 2, + 4, + 8, + 16,..... So, missing term = 28 + 8 = 36.
Que- 3, 15, ?, 63, 99, 143
a. 27
b. 35
c. 45
d. 56
Answer- 35
Explanation- The terms of the given series are (22 - 1), (42 - 1),....., (82 - 1), (102 - 1), (122 - 1). So, missing term = (62 - 1) - (36 - 1) = 35.
Que- 48, 24, 96, 48, 192, ?
a. 76
b. 90
c. 96
d. 98
Answer- 96
Explanation- The pattern is ÷ 2, x 4, ÷ 2, x 4, ..... So, missing term = 192 ÷ 2 = 96.
Que- 6, 11, 21, 36, 56, ?
a. 42
b. 51
c. 81
d. 91
Answer- 81
Explanation- The pattern is + 5, + 10, + 15, + 20, ... So, missing term = 56 + 25 = 81.
Que- 66, 36, 18, ?
a. 3
b. 6
c. 8
d. 9
Answer- 8
Explanation- Each term in the series is the product of the digits of the preceding term. So, missing term = 1 x 8 = 8.
Que- 28, 33, 31, 36, ?, 39
a. 32
b. 34
c. 38
d. 40
Answer- 34
Explanation- The pattern is + 5, - 2, + 5, - 2,..... So, missing term = 36 - 2 = 34.
Que- 2, 2, 5,13, 28, ?
a. 49
b. 50
c. 51
d. 52
Answer- 52
Explanation- The pattern is + 0, + 3, + 8, + 15, ..... i.e. + (l2 - 1), + (22 - 1), + (32 - 1), + (42 - 1), ..... So, missing term = 28 + (52 - 1) = 28 + 24 = 52.
Que- 0, 2, 8, 14, ?, 34
a. 20
b. 23
c. 24
d. 25
Answer- 24
Explanation- The pattern is + 2, + 6, + 6, + 10, + 10,..... So, missing term = 14 + 10 = 24.
Que- 2, 3 ,8 , 27, 112, ?
a. 226
b. 339
c. 452
d. 565
Answer- 565
Explanation- The pattern is x 1 + 1, x 2 + 2, x 3 + 3, x 4 + 4,..... So, missing term = 112 x 5 + 5 = 565.
Que- 24, 60, 120, 210, ?
a. 300
b. 336
c. 420
d. 525
Answer- 336
Explanation- The pattern is + 36, + 60, + 90,.....i.e. + [6 x (6 + 0)], + [6 x (6 + 4)], + [6 x (6 + 9)],... So, missing term = 210 + [6 x (6 + 15)] = 210 + 126 = 336.
Que- 10, 100, 200, 310, ?
a. 400
b. 410
c. 420
d. 430
Answer- 430
Explanation- The pattern is + 90 + 100, + 110,..... So, missing term = 310 + 120 = 430.
Que- 10, 100, 200, 310, ?
a. 400
b. 410
c. 420
d. 430
Answer- 430
Explanation- The pattern is + 90 + 100, + 110,..... So, missing term = 310 + 120 = 430.
Que- 2, 15, 4, 12, 6, 7, ?, ?
a. 8, 8
b. 8, 0
c. 3, 8
d. None of these
Answer- 8, 0
Explanation- Let the missing terms of the series be x1 and x2. Thus, the sequence 2, 15, 4, 12, 6, 7, x1 x2 is a combination of two series : I. 2, 4, 6, x1 and II. 15, 12, 7, x2I consists of consecutive even numbers. So, missing term, x1 = 8. The pattern in II is - 3, - 5,......So, missing term, x2 = 7 - 7 = 0.
Que- 4832, 5840, 6848, ?
a. 7815
b. 7846
c. 7856
d. 7887
Answer- 7856
Explanation- The pattern is + 1008. So, missing term - 6848 + 1008 = 7856.
Que- 5824, 5242, ?, 4247, 3823
a. 4467
b. 4718
c. 4856
d. 5164
Answer- 4718
Explanation- Each term in the series is obtained by subtracting from the preceding term the number formed by the first three digits of the preceding term. So, missing term = 5242 - 524 = 4718.
Que- 2, 8, 16, 128, ?
a. 2042
b. 2046
c. 2048
d. 2056
Answer- 2048
Explanation- Each term in the series, except the first two terms, is the product of the preceding two terms. So, missing term = 16 x 128 = 2048.
Que- 0, 2, 3, 5, 8, 10, 15, 17, 24, 26, ?
a. 28
b. 30
c. 32
d. 35
Answer- 35
Explanation- The given sequence is a combination of two series : I. 0, 3, 8, 15, 24, ? and II. 2, 5, 10, 17, 26 The pattern in each one of I and II is + 3, + 5, + 7, + 9, ..... So, missing term = 24 + 11 = 35.
Que- 11, 13, 17, 19, 23, 25, ?
a. 26
b. 27
c. 29
d. 37
Answer- 29
Explanation- The pattern is + 2, + 4, + 2, + 4, ..... So, missing term = 25 + 4 = 29.
Que- 5, 2, 7, 9, 16, 25, ?
a. 41
b. 45
c. 48
d. 52
Answer- 41
Explanation- Each term in the series, except the first two terms, is the sum of the preceding two terms. So, missing term = 16 + 25 = 41.
Que- 7, 26, 63, 124, 215, 342, ?
a. 391
b. 421
c. 481
d. 511
Answer- 511
Explanation- The terms of the given series are (23 - 1), (33 - 1), (43 - 1), (53 - 1), (63 - 1), (73 - 1),..... So, missing term = (83 - 1) = (512 - 1) = 511.
Que- 6, 18, 3, 21, 7, 56, ?
a. 8
b. 9
c. 63
d. 64
Answer- 8
Explanation- Each term at an even place in the series is the product of its two adjacent terms. Thus, if the missing term be x, then we have : 7 x x = 56 or x = 56 ÷ 7 = 8.
Que- 4, 9, 25, ?, 121, 169, 289, 361
a. 49
b. 64
c. 81
d. 87
Answer- 49
Explanation- The given series consists of squares of consecutive prime numbers i.e. 22, 32, 52,.....,
Que- 3, 7, 15, ?, 63, 127
a. 30
b. 31
c. 47
d. 52
Answer- 31
Explanation- Each number in the series is one more than twice the preceding number. So, missing term = (15 x 2) + 1 = 31.
Que- 4, 10, ?, 82, 244, 730
a. 24
b. 28
c. 77
d. 218
Answer- 28
Explanation- Each number in the series is 2 less than thrice the preceding number. So, missing number = (10 x 3) - 2 = 28.
Que- 1, 5, 13,25,41,?
a. 51
b. 57
c. 61
d. 63
Answer- 61
Explanation- The pattern is + 4, + 8, + 12, + 16...... So, missing term = 41 + 20 = 61.
Que- 4, 7, 12, 19, 28, ?
a. 30
b. 36
c. 39
d. 49
Answer- 39
Explanation- The pattern is + 3, + 5, + 7, + 9, ..... So, missing term = 28 + 11 = 39.
Que- 45, 54, 47, ?, 49, 56, 51, 57, 53
a. 48
b. 50
c. 55
d. None of these
Answer- 55
Explanation- The given sequence is a combination of two series: I. 45, 47, 49, 51, 53 and II. 54, ?, 56, 57 Clearly, II consists of consecutive natural numbers, starting from 54. So, missing term = 55.
Que- 3, 8, 13, 24, 41, ?
a. 70
b. 75
c. 80
d. 85
Answer- 70
Explanation- The pattern followed is : nth term + (n + l)th term + (n + 1) = (n + 2)th term. Thus, 1st term + 2nd term + 2 = 3rd term; 2nd term + 3rd term + 3 = 4th term and so on. So, missing term = 6th term = 4th term + 5th term + 5 = 24 + 41 + 5 = 70.
Que- 10, 18, 28, 40, 54, 70, ?
a. 85
b. 86
c. 87
d. 88
Answer- 88
Explanation- The pattern is + 8, + 10, + 12, + 14, ..... So, missing term = 70 + 18 = 88.
Que- One term in the number series is wrong. Find out the wrong term. 2, 6, 24, 96, 285, 568, 567
a. 6
b. 24
c. 285
d. 567
Answer- 24
Explanation- The correct pattern is x 6 - 6, x 5 - 5, x 4 - 4,..... So, 24 is wrong and must be replaced by (6 x 5 - 5) i.e. 25.
Que- One term in the number series is wrong. Find out the wrong term. 5, 10, 40, 80, 320, 550, 2560
a. 80
b. 320
c. 550
d. 2560
Answer- 550
Explanation- The correct pattern is x 2, x 4, x 2, x 4, ..... So, 550 is wrong and must be replaced by (320 x 2) i.e. 640.
Que- One term in the number series is wrong. Find out the wrong term. 46080, 3840, 384, 48, 24, 2, 1
a. 384
b. 48
c. 24
d. 2
Answer- 24
Explanation- The correct pattern is ÷ 12, ÷ 10, ÷ 8,÷ 6,..... So, 24 is wrong and must be replaced by (48 + 6) i.e. 8.
Que- One term in the number series is wrong. Find out the wrong term. 89, 78, 86, 80, 85, 82, 83
a. 83
b. 82
c. 86
d. 78
Answer- 86
Explanation- The correct pattern is - 11, + 9, - 7, + 5, - 3, + 1. So, 86 is wrong and must be replaced by (78 + 9) i.e. 87.
Que- One term in the number series is wrong. Find out the wrong term. 93, 309, 434, 498, 521, 533
a. 309
b. 434
c. 498
d. 521
Answer- 521
Explanation- The correct pattern is + 63, + 53, + 43, + 33, ..... So, 521 is wrong and must be replaced by (498 + 33) i.e. 525.
Que- Choose the missing terms out of the given alternatives. WFB, TGD, QHG, ?
a. NIJ
b. NIK
c. NJK
d. OIK
Answer- NIK
Que- Choose the missing terms out of the given alternatives. AZ, GT, MN, ?, YB
a. JH
b. SH
c. SK
d. TS
Answer- SH
Que- Choose the missing terms out of the given alternatives. H, I, K, N, ?
a. O
b. Q
c. R
d. S
Answer- R
Que- Choose the missing terms out of the given alternatives. Z, S, W, O, T, K, Q, G, ?, ?
a. N, C
b. N, D
c. O, C
d. O, D
Answer- N, C
Que- Choose the missing terms out of the given alternatives. b e d f ? h j ? l
a. i m
b. m i
c. i n
d. j m
Answer- i m
Explanation- The series may be divided into groups as shown: b e d / f ? h / j ? l Clearly in the first group, the second and third letters are respectively three and two steps ahead of the first letter. A similar pattern would follow in the second and third groups.
Que- Choose the missing terms out of the given alternatives. A, G, L, P, S, ?
a. U
b. W
c. X
d. Y
Answer- U
Que- Choose the missing terms out of the given alternatives. ajs, gpy, ?, sbk, yhq
a. dmv
b. mve
c. oua
d. qzi
Answer- mve
Que- Choose the missing terms out of the given alternatives. AB, DEF, HIJK, ?, STUVWX
a. LMNO
b. LMNOP
c. MNOPQ
d. QRSTU
Answer- MNOPQ
Explanation- The number of letters in the terms of the given series increases by one at each step. The first letter of each term is two steps ahead of the last letter of the preceding term. However, each term consists of consecutive letters in order.
Que- Choose the missing terms out of the given alternatives. Y, B, T, G, O, ?
a. N
b. M
c. L
d. K
Answer- L
Explanation- The given sequence is a combination of two series : I. Y,T, O and II. B, G, ? I consists of 2nd, 7th and 12th letters from the end of the English alphabet, while II consists of 2nd, 7th and 12th letters from the beginning of the English alphabet. So, the missing letter in II is the 12th letter from the beginning of the English alphabet, which is L.
Que- Choose the missing terms out of the given alternatives. C, Z, F, X, I, V, L, T, O, ?, ?
a. O, P
b. P, Q
c. R, R
d. S, R
Answer- R, R
Explanation- The given sequence is a combination of two series: I. C, F, I, L, O, ? and II. Z, X, V, T, ?
Que- Choose the missing terms out of the given alternatives. A, B, B, D, C, F, D; H, E, ?, ?
a. E, F
b. F, G
c. F, I
d. J, F
Answer- J, F
Explanation- The given sequence is a combination of two series : I. 1st, 3rd, 5th, 7th, 9th, 11th terms i.e. A, B, C, D, E, ? II. 2nd, 4th, 6th, 8th, 10th terms i.e. B, D, F, H, ? Clearly, I consists of consecutive letters while II consists of alternate letters. So, the missing letter in I is F, while that in II is J. So, the missing terms i.e. 10th and 11th terms are J and F respectively.
Que- Choose the missing terms out of the given alternatives. Z, X, S, I, R, R, ?, ?
a. G,I
b. J, I
c. J,K
d. K,M
Answer- G,I
Explanation- Note that the numbers representing the difference between the consecutive terms of the series again from a series - 2, 5, 10, 17, 26, 37, 50 - in which the pattern is +3, +5, +7, +9, +11, +13.
Que- Choose the missing terms out of the given alternatives. AYBZC, DWEXF, GUHVI, JSKTL, ?
a. MQORN
b. MQNRO
c. NQMOR
d. QMONR
Answer- MQNRO
Que- Choose the missing terms out of the given alternatives. T, R, P, N, L, ?, ?
a. J, G
b. J, H
c. K, H
d. K, I
Answer- J, H
Que- Choose the missing terms out of the given alternatives. PMT, OOS, NQR, MSQ, ?
a. LUP
b. LVP
c. LVR
d. LWP
Answer- LUP
Que- Choose the missing terms out of the given alternatives. A, B, N, C, D, O, E, F, P, ?, ?, ?
a. G, H, I
b. G, H, J
c. G, H, Q
d. J, K, L
Answer- G, H, Q
Explanation- The given series may be divided into 2 groups : I. A, B, C, D, E, F, ?, ? and II. N, O, P, ? Clearly, the given series consists of two terms of I followed by one term of II. The missing terms in I are G and H while the missing term in II is Q.
Que- Choose the missing terms out of the given alternatives. GH, JL, NQ, SW, YD, ?
a. EJ
b. FJ
c. EL
d. FL
Answer- FL
Que- Choose the missing terms out of the given alternatives. R, U, X, A, D, ?
a. F
b. G
c. H
d. I
Answer- G
Que- Choose the missing terms out of the given alternatives. AYD, BVF, DRH, ?, KGL
a. FMI
b. GMJ
c. GLJ
d. HLK
Answer- GMJ
Que- Choose the missing terms out of the given alternatives. AZ, CX, FU, ?
a. IR
b. IV
c. JQ
d. KP
Answer- JQ
Que- Choose the missing terms out of the given alternatives. ADVENTURE, DVENTURE, DVENTUR, ?, VENTU
a. DVENT
b. VENTURE
c. VENTUR
d. DVENTU
Answer- VENTUR
Explanation- One letter from the beginning and one from the end of a term are removed, one by one, in alternate steps.
Que- Choose the missing terms out of the given alternatives. A, D, H, M, ?, Z
a. T
b. G
c. N
d. S
Answer- S
Que- Choose the missing terms out of the given alternatives. PERPENDICULAR, ERPENDICULA, RPENDICUL, ?
a. PENDICUL
b. PENDIC
c. ENDIC
d. None of these
Answer- None of these
Explanation- Each term of the series is obtained by removing two letters from the preceding term one from the beginning and one from the end, So, the missing term is PENDICU.
Que- Choose the missing terms out of the given alternatives. Z, ?, T, ?, N, ?, H, ?, B
a. W, Q, K, E
b. W, R, K, E
c. X, Q, K, E
d. X, R, K, E
Answer- W, Q, K, E
Que- Choose the missing terms out of the given alternatives. ejo tyd ins xch ?
a. nrw
b. mrw
c. msx
d. nsx
Answer- mrw
Explanation- There is a gap of four letters between the first and second, the second and third letters of each term, and also between the last letter of a term and the first letter of the next term.
Que- Choose the missing terms out of the given alternatives. Z, U, Q, ?, L
a. I
b. K
c. M
d. N
Answer- N
Que- Choose the missing terms out of the given alternatives. M, N, O, L, R, I, V, ?
a. A
b. E
c. F
d. H
Answer- E
Explanation- The given sequence is a combination of two series: I. M, O, R, V and II. N, L, I, ?
Que- Choose the missing terms out of the given alternatives. B, D, F, I, L, P, ?
a. R
b. S
c. T
d. U
Answer- T
Que- Choose the missing terms out of the given alternatives. ATTRIBUTION, TTRIBUTIO, RIBUTIO, IBUTI, ?
a. IBU
b. UT
c. UTI
d. BUT
Answer- UTI
Explanation- In the first step, one letter from the beginning and one from the end of a term are removed to give the next term. In the second step, two letters from the beginning of a term are removed. These two steps are repeated alternately.
Que- Choose the missing terms out of the given alternatives. DHL, PTX, BFJ, ?
a. CGK
b. KOS
c. NRV
d. RVZ
Answer- NRV
Que- Choose the missing terms out of the given alternatives. A, CD, GHI, ?, UVWXY
a. LMNO
b. MNO
c. MNOP
d. NOPQ
Answer- MNOP
Explanation- Each term consists of consecutive letters in order. The number of letters in the terms goes on increasing by one at each step. Also, there is a gap of one letter between the last letter of the first term and the first letter of the second term; a gap of two letters between the last letter of the second term and the first letter of the third term; and so on. So, there should be a gap of three letters between the last letter of the third term and the first letter of the desired term.
Que- Choose the missing terms out of the given alternatives. Z, Y, X, U, T, S, P, O, N, K, ?, ?
a. H,G
b. H, I
c. I,H
d. J, I
Answer- J, I
Que- Choose the missing terms out of the given alternatives. U, B, I, P, W, ?
a. D
b. F
c. Q
d. Z
Answer- D
Que- Choose the missing terms out of the given alternatives. AI, BJ, CK, ?
a. DL
b. DM
c. GH
d. LM
Answer- DL
Que- Consider the following series: A B C D .... X Y Z // Y X ...... B A // B C D ...... Y Z // Y X ..... C B A // B C ........ Y Z .... Which letter occupies the 1000th positing in the above series ?
a. B
b. C
c. X
d. Y
Answer- B
Explanation- We have 3 patterns: I: A B C D ... X Y Z, which occurs only once. Y X ... B A, which repeats alternately. B C ... Y Z, which repeats alternately. Now, I: has 26 terms. So, number of terms before the desired term = (999 - 26) = 973. Each of the patterns which occurs after I: has 25 letters. Now, 973 ÷ 25 gives quotient = 38 and remainder = 23. Thus, the 1000th trem of the given series is the 24th term of the 39th pattern after I:. Clearly, the 39th pattern is II: and its 24th term is B.
Que- Choose the missing terms out of the given alternatives : R, U, X, A, D, ?
a. F
b. G
c. H
d. I
Answer- G
Explanation- R + 3 = U U + 3 = X X + 3 = A A + 3 = D D + 3 = G
Que- Choose the missing terms out of the given alternatives : Z, ?, T, N, ?, H, ?, B
a. W, Q, K, E
b. W, R, K, E
c. X, Q, K, E
d. X, R, K, E
Answer- W, Q, K, E
Explanation- Z - 6 T - 6 N - 6 H - 6 B Z -3 W - 3 T - 3 Q- 3 N - 3 K - 3 H - 3 E - 3 B
Que- Choose the missing terms out of the given alternatives : B, D, F, I, L, P, ?
a. R
b. S
c. T
d. U
Answer- T
Explanation- B + 2 D + 2 F + 3 I + 3 L + 4 P + 4 T
Que- Choose the missing terms out of the given alternatives : AI, BJ, CK, ?
a. DL
b. DM
c. GH
d. LM
Answer- DL
Que- Choose the missing terms out of the given alternatives : AYD, BVF, DRH, ?, KGL
a. FMI
b. GMJ
c. GLJ
d. HLK
Answer- GMJ
Que- Choose the missing terms out of the given alternatives : BZA, DYC, FXE, ?, JVI
a. HUG
b. HWG
c. UHG
d. WHG
Answer- HWG
Que- Choose the missing terms out of the given alternatives : AZ, GT, MN, ?, YB
a. JH
b. SH
c. SK
d. TS
Answer- SH
Que- Choose the missing terms out of the given alternatives : UPI, ?, ODP, MBQ, IAW
a. RHJ
b. SHJ
c. SIJ
d. THK
Answer- SHJ
Que- Choose the missing terms out of the given alternatives : GH, JL, NQ, SW, YD, ?
a. EJ
b. FJ
c. EL
d. FL
Answer- FL