General Intelligence and Reasoning MCQ (Multiple Choice Questions) - SchoolingAxis

General Intelligence and Reasoning

 Que- Find the odd number / letters / word from the given alternative: 

a. Bogota 

b. Sydney 

c. Doha 

d. Brussels 


Answer- Sydney 

Explanation- Except Sydney, all others are capitals of the respective countries. 


Que- Find the odd number / letters / word from the given alternative: 

a. CGON 

b. FJQP 

c. HLTS 

d. LPXW 


Answer- FJQP 

Explanation- In all other groups, the second,  fourth and the third letters are respectively four, eight and one steps ahead of the first, second and fourth letters respectively. 


Que- Find the odd number / letters / word from the given alternative: 

a. AEGC 

b. HLNJ 

c. OSVQ 

d. VZBX 


Answer- OSVQ 

Explanation- All other groups consist of alternate letters, though not in order. 


Que- Find the odd number / letters / word from the given alternative: 

a. SUWY 

b. MOQS 

c. CEGI 

d. HJMO 


Answer- HJMO 

Explanation- All other groups consist of alternate letters. 


Que- Find the odd number / letters / word from the given alternative: 

a. JKST 

b. GHQR 

c. ABKL 

d. DENO 


Answer- JKST 

Explanation- In all other groups, the first and second as well as the third and fourth letters are consecutive and the third letter is nine steps ahead of the second. 


Que- Find the odd number / letters / word from the given alternative: 

a. FJOU 

b. EINT 

c. JNRX 

d. ADHM 


Answer- JNRX 

Explanation- In all other groups, the number of letters skipped between two consecutive letters increases by one from left to right. 


Que- Find the odd number / letters / word from the given alternative: 

a. (52, 142) 

b. (54, 126) 

c. (56, 168) 

d. (58, 184) 


Answer- (56, 168) 

Explanation- In all other pairs, sum of the digits of both the numbers is the same. 


Que- Find the odd number / letters / word from the given alternative: 

a. 12/31/1899 9:24:00 PM 

b. 1/1/1900 4:32:00 AM 

c. 54 : 62 

d. 70 : 80 


Answer- 54 : 62 

Explanation- In all other pairs, the two numbers are consecutive multiples of the same number. 


Que- Find the odd number / letters / word from the given alternative: 

a. 2, 3, 6 

b. 6, 1, 6 

c. 3, 3, 9 

d. 6, 2, 5 


Answer- 6, 2, 5 

Explanation- In all other groups, the third number is equal to the product of the first two numbers. 


Que- Find the odd number / letters / word from the given alternative: 

a. 0.566666666666667 

b. 0.622916666666667 

c. 0.708333333333333 

d. 0.755555555555556 


Answer- 0.622916666666667 

Explanation- In all other pairs, second number is obtained by multiplying the first number by 8. 


Que- Find the odd number / letters / word from the given alternative: 

a. 3, 9, 6, 15 

b. 6, 18, 12, 30 

c. 4, 16, 12, 24 

d. 12, 36, 24, 60 


Answer- 4, 16, 12, 24 

Explanation- In all other groups, the numbers are in the ratio 1 : 3 : 2 : 5 


Que- Find the odd number / letters / word from the given alternative: 

a. LAHMQW 

b. HUTMCX 

c. CLOVIK 

d. IXMLBC 


Answer- CLOVIK 

Explanation- All other groups contain only one vowel. 


Que- Find the odd number / letters / word from the given alternative: 

a. EMGIK 

b. BHJFD 

c. WUSQY 

d. NOSUX 


Answer- NOSUX 

Explanation- All other groups contain alternate letters, though not in order. 


Que- Find the odd number / letters / word from the given alternative: 

a. Mouth Organ 

b. Electric Guitar 

c. Keyboard 

d. Sonata 


Answer- Keyboard 

Explanation- Except Keyboard, all others are musical instruments. 


Que- Find the odd number / letters / word from the given alternative: 

a. Head 

b. Heed 

c. Led  

d. Heap 


Answer- Heed 

Explanation- Heed is different from all others. 


Que- Find the odd number / letters / word from the given alternative: 

a. Assassinate 

b. Kill 

c. Murder 

d. Kidnap 


Answer- Kidnap 

Explanation- Except the word Kidnap, all other words are  related to death. So, (D) is the answer.                  


Que- Find the odd number / letters / word from the given alternative: 

a. 27 

b. 35 

c. 18 

d. 9 


Answer- 35 

Explanation- Except 35  all others are multiples of 9. 


Que- Find the odd number / letters / word from the given alternative: 

a. 7202 

b. 4025 

c. 6023 

d. 5061 


Answer- 5061 

Explanation- 7202 = 7 + 2 + 0 + 2 = 11 4025 = 4 + 0 + 2 + 5 = 11 6023 = 6 + 0 + 2 + 3 = 11 5061 = 5 + 0 + 6 + 1 ≠ 11 So, 5061 is different from others. 


Que- Find the odd number / letters / word from the given alternative: 

a. Udayagiri and Khandagiri 

b. Badami 

c. Elephanta 

d. Doddabetta 


Answer- Badami 

Explanation- Except Badami, all others are names of the mountains or its region. 


Que- Find the odd number / letters / word from the given alternative:  10, 13, 234, 681, 997 

a. 10 

b. 234 

c. 13 

d. 681 


Answer- 681 

Explanation- 681 is odd number as 10, 12, 234, 681, 997 10 = 1 + 0 = (1)2  13 = 1 + 3 = 4 = (2)2  234 = 2 + 3 + 4 = 9 = (3)2  997 = 9 + 9 + 7 = 25 = (5)2   681 = 6 + 8 + 1 = 15 ≠ (4)2  


Que- Find the odd number / letters / word from the given alternative: 

a. HSKP 

b. DWFU 

c. KQNN 

d. EVHS 


Answer- KQNN 

Explanation- First-second and third-fourth letters are at the same position one from the beginning and other from the end, except for option C. 


Que- Find the odd number / letters / word from the given alternative: 

a. Scurvy 

b. Rickets 

c. Night-blindness 

d. Influenza 


Answer- Influenza 

Explanation- Except influenza, all other disease are caused by the deficiency of vitamins. 


Que- Find the odd number / letters / word from the given alternative: 

a. Deck 

b. Quay 

c. Stem 

d. Bow 


Answer- Bow 

Explanation- Except bow, all others are related with Ship. 


Que- Find the odd number / letters / word from the given alternative: 

a. STR 

b. ONP 

c. IHJ 

d. LKM 


Answer- STR 

Explanation- ONP = NOP IHJ = HIJ LKM = KLM STR = RST (This is odd out)                  


Que- Find the odd number / letters / word from the given alternative: 

a. Bay 

b. Cape 

c. Peninsula 

d. Island 


Answer- Cape 

Explanation- All words except Cape , are geographically used words. 


Que- Find the odd number / letters / word from the given alternative: 

a. Liberty 

b. Society 

c. Equality 

d. Fraternity 


Answer- Society 

Explanation- All words except option (B), are commonly used in human society. 


Que- Find the odd number / letters / word from the given alternative: 

a. Saltoro Kangri 

b. Kongka 

c. Zoji La 

d. Kumbharli Ghat 


Answer- Saltoro Kangri 

Explanation- Except Saltoro Kangri, all other are the mountains passes.  


Que- Find the odd number / letters / word from the given alternative: 

a. Tibia 

b. Cortex 

c. Cranium 

d. Cerebellum 


Answer- Tibia 

Explanation- Except Tibia, all others are part of the brain. 


Que- Find the odd number / letters / word from the given alternative: 

a. Night 

b. Morning 

c. Noon 

d. Evening 


Answer- Night 

Explanation- Except option (A) all others are the time sessions of a day. 


Que- Find the odd number / letters / word from the given alternative: 

a. 547 - 563 

b. 71 - 55 

c. 517 - 523 

d. 248 - 231 


Answer- 248 - 231 

Explanation- The difference of the other numbers except option (D) is divisible by 2. 


Que- Find the odd number / letters / word from the given alternative: 

a. Heat 

b. Light 

c. Bulb 

d. Electricity 


Answer- Heat 

Explanation- Heat is different from the other three. 


Que- Find the odd number / letters / word from the given alternative: 

a. IHKL 

b. GFHJ 

c. EDGH 

d. CBEF 


Answer- GFHJ 

Explanation- The first and third letters are alternate letters in all except option B. 


Que- Find the odd number / letters / word from the given alternative: 

a. Tea 

b. Cinchona 

c. Rubber 

d. Chalk 


Answer- Chalk 

Explanation- Except Chalk, all others are obtained from plants. 


Que- Find the odd number / letters / word from the given alternative: 

a. Berene 

b. Bristol 

c. Zurich 

d. Geneva 


Answer- Berene 

Explanation- Except Berene, all others are cities, So, option (A) is odd man out. 


Que- Find the odd number / letters / word from the given alternative: 

a. Retina 

b. Pupil 

c. Vision 

d. Cornea 


Answer- Vision 

Explanation- Except Vision, all others are the internal part of an eye. 


Que- Find the odd number / letters / word from the given alternative: 

a. Rival 

b. Opponent 

c. Foe 

d. Ally 


Answer- Ally 

Explanation- Except Ally, all others are negative words. 


Que- Find the odd number / letters / word from the given alternative: 

a. ADGJM 

b. PSVYB 

c. HKNQT 

d. SVXAD 


Answer- SVXAD 

Explanation- In all other groups, there is a gap of 2 letters between any two consecutive letters. 


Que- What will come at the place of question mark ? 1, 9, 25, 49, ?, 121. 

a. 100 

b. 91 

c. 64 

d. 81 


Answer- 81 

Explanation-   12 = 1. 32 = 9. 52 = 25. 72 = 49. 92 = 81.                    


Que- What will come at the place of question mark? 4, 7, 12, 19, 28, ? 

a. 49 

b. 36 

c. 30 

d. 39 


Answer- 39 

Explanation-   First term : 4 Second term: 4+3 = 7 Third term : 7+5 = 12 Fourth term : 12+7 = 19. Fifth term : 19+9 = 28. Therefore, Next Terms : 28+11 = 39                    


Que- What will come at the place of question mark ? 6, 11, 21, 36, 56, ? 

a. 91 

b. 51 

c. 81 

d. 42 


Answer- 81 

Explanation-   6 (+5)→ 11 (+10)→ 21 (+15)→ 36 (+20)→ 56 (+25) → 81.                    


Que- What will come at the place of question mark ? 10, 100, 200, 310, ? 

a. 430 

b. 420 

c. 410 

d. 400 


Answer- 430 

Explanation-   1st term : 10 2nd term : 100 = 10+90 3rd term : 200 = 100+100 4th term : 310 = 200+110 5th Term: 430 = 310+120 Therefore, the answer is 430.                    


Que- What will come at the place of question mark ? 8, 28, 116, 584, ? 

a. 1752 

b. 3504 

c. 3508 

d. 3502 


Answer- 3508 

Explanation-   (8 *3) + 4 = 28 (28 *4) + 4 = 116 (116 *5) + 4 = 584 (584 *6) + 4 = 3508.   


Que- What will come at the place of question mark ? 3, 7, 23, 95, ? 

a. 62 

b. 128 

c. 479 

d. 575 


Answer- 479 

Explanation-   1st number = 3  2nd number = 3 x 2 +1 = 7  3rd number = 7 x 3 + 2 = 23 4th number = 23 x 4 + 3 = 95 5th number = 95 x 5 + 4 = 479                    


Que- What will come at the place of question mark ? 7, 26, 63, 124, 215, 342, ? 

a. 391 

b. 511 

c. 481 

d. 421 


Answer- 511 

Explanation-   The terms are given in a series (23 -1) = 7 (33 -1) = 26 (43 -1) = 63 (53 -1) = 124 (63 -1) = 215 (73 -1) = 342 So, the missing term is, (83 -1) = 511.                    


Que- What will come at the place of question mark ? 165, 195, 255, 285, 345, ? 

a. 390 

b. 420 

c. 435 

d. Two answer out of four option 


Answer- Two answer out of four option 

Explanation-  (Solution-1)  Each number of given series is 15 multiplied by a prime number. 15*11, 15*13, 15*17, 15*19, 15*23.  So, Missing number is 15*29 = 435. (Solution-2):   This pattern is +30 and then +60 also follow for the give series.  165+30=195, 195+60=255, 255+30=285, 285+60=345, 345+30=375   


Que- 34, 45, 56, 67, ....... What number should come next? 

a. 78 

b. 73 

c. 82 

d. 84 


Answer- 78 

Explanation-   34(+11) → 45(+11) → 56(+11) →67 (+11) → 78.                    


Que- What will come at the place of question mark ? 3, 2, 7, 6, 11, ? 

a. 8 

b. 10 

c. 4 

d. 2 


Answer- 10 

Explanation-   2nd number is less by 1 than the 1st number and 3rd number is more by 5 than the 2nd number. The same rule follows in other numbers of the series.                    


Que- In the following number series a wrong number is given. Find out the wrong number. 150, 450, 750, 1060,1350,1650,1950 

a. 1060 

b. 1950 

c. 450 

d. 1350 E.  750 


Answer- 1060 

Explanation-   By adding 300 to each term, we get the next term. 1060 is wrong term. It should be 1050.                    


Que- What will come at the place of question mark ? 5690, 5121, 4552, 3983, 3414, 2845, ? 

a. 2276 

b. 2516 

c. 2356 

d. 2456 


Answer- 2276 

Explanation-   By subtracting 569, we get the next term. Required number, = 2845-569 = 2276.                    


Que- What will come at the place of question mark ? 4, 8, 10, 14, 16, 20, ? 

a. 22 

b. 21 

c. 20 

d. None 


Answer- 22 

Explanation-   Above series contains two sub-series in it. 4, 10, 16, 22 8, 14, 20 Each of both term there is difference of 6 i.e. next term is 6 greater than previous term.                    


Que- What will come at the place of question mark ? 9, 17, 33, 65, ? 

a. 117 

b. 119 

c. 129 

d. 99 


Answer- 129 

Explanation-   First term → 9 Second term → (9 *2 -1) = 17 Third term → (17 *2 -1) = 33 Fourth term → (33 *2 -1) = 65 Fifth term → (65 *2 -1) = 129                    


Que- What will come at the place of question mark ? 2, 3, 6, 15, ?, 123 

a. 47 

b. 42 

c. 45 

d. 50 


Answer- 42 

Explanation-   First term → 2 Second term → (2 *3 -3) = 3 Third term → (3 *3 -3) = 6 Fourth term → (6 *3 - 3) = 15 Fifth term → (15 *3 - 3) = 42 Sixth term → (42 *3 - 3) = 123                   


Que- In the following number series a wrong number is given. Find out the wrong number. 1, 3, 10, 21, 64, 129, 356, 777 

a. 129 

b. 21 

c. 10 

d. 356 


Answer- 356 

Explanation-   The given pattern is, 2nd term → 1*2+1 = 3 3rd term → 3*3+1 = 10 4th term → 10*2+1 = 21 5th term → 21*3+1 = 64 6th term → 64*2+1 = 129 7th term → 129*3+1= 388 So, 7th term 356 is wrong and must be replaced by 388.                    


Que- What will come at the place of question mark ? 9, 27, 31, 155, 161, 1127, ? 

a. 316 

b. 1135 

c. 1288 

d. 2254 


Answer- 1135 

Explanation-   Given pattern is, 2nd term → 9*3 = 27 3rd term → 27+4 = 31 4th term → 31*5  = 155 5th term → 155+6 = 161. 6th term → 161*7 = 1127 Missing term → 1127+8 = 1135.                    


Que- What will come at the place of question mark ? 2, 7, 27, 107, 427, ? 

a. 1262 

b. 1707 

c. 4027 

d. 4207 


Answer- 1707 

Explanation-   The pattern is, 2nd term → 2 +(5 *12) = 7 3rd term → 7 +(5 *22) = 27 4th term → 27 +(5 *42) = 107 5th term → 107 +(5 *82) = 427 Missing term → 427 +(5 *162) = 1707                    


Que- Sunday, Monday, Wednesday, Saturday, Wednesday, Monday, ..... 

a. Sunday, Sunday 

b. Sunday, Monday 

c. Sunday, Wednesday 

d. Sunday, Saturday 


Answer- Sunday, Sunday 

Explanation-   Sunday to Monday = no gap Monday to Wednesday = One day gap. Wednesday to Saturday = Two days gap. Saturday to Wednesday = Three days gap. Wednesday to Monday = Four days gap. In the next term there must be five days and six days gap. So, Next term would be Sunday, Sunday.                    


Que- What will come at the place of question mark ? 2816, ? , 176, 44, 11. 

a. 704 

b. 1408 

c. 352 

d. 2640 


Answer- 704 

Explanation-   Logic: Next term = Previous term /4 2816 /4 = 704 704 /4 = 176. 176 /4 = 44. 44 /4 = 11.                    


Que- What will come at the place of question mark ? 113, 225, 449, ? , 1793 

a. 897 

b. 789 

c. 987 

d. 978 


Answer- 897 

Explanation-   113 113 * 2 = 226 -1 = 225 225 * 2 = 450 -1 = 449 449 * 2 = 898 - 1 = 897 897 * 2 = 1794 -1 = 1793                    


Que- Which of the following will come in place of the question mark (?) in the following sequence? PRODUCTIVITY, RODUCTIVIT, ODUCTIVI, ? 

a. DUCTIV 

b. DUCTLY 

c. UCTIV 

d. DUCTI 


Answer- DUCTIV 

Explanation-   PRODUCTIVITY = RODUCTIVIT.(First and last letters are removed.) RODUCTIVIT = ODUCTIVI. ODUCTIVI = DUCTIV.                    


Que- What will come at the place of question mark ? 6, 24, 60,120, 210, ? 

a. 336 

b. 366 

c. 330 

d. 660 


Answer- 336 

Explanation-   First Number = 1 *2 *3 = 6 Second Number = 2*3*4 = 24 Third Number = 3*4*5 = 60 Fourth Number = 4*5*6 = 120 Fifth Number = 5*6*7 = 210 Sixth Number = 6*7*8 = 336. Alternatively, 2*2*2-2=6 3*3*3-3=24 4*4*4-4=60 5*5*5-5=120 6*6*6-6=210 7*7*7-7=336.                    


Que- What will come at the place of question mark ? 6, 11, 31, 121, 601, ? 

a. 3600 

b. 3621 

c. 3601 

d. 3611 


Answer- 3601 

Explanation-   Logic: First Term = 6. Second term = 6*2 -1 = 11. Third term = 11* 3 - 2 = 31. Fourth term = 31 *4 - 3 = 124 -3 = 121. Fifth term = 121*5 - 4 = 601. Sixth term = 601 *6 = 3606 - 5 = 3601.                    


Que- What will come at the place of question mark ? 7, 11, 19, 35, 67, ? 

a. 99 

b. 131 

c. 137 

d. None 


Answer- 131 

Explanation-   Logic: Last Term *2 - 3 = Next Term. First Term = 7 Second Term = 7 * 2 -3 = 11 Third Term = 11 * 2 - 3 = 19 Fourth Term = 19 * 2 - 3 = 35 Fifth Term = 35 * 2 - 3 = 67 Sixth Term = 67 * 2 -3 = 131 Alternative Solution : Last term + 2n = Next Term First Term = 7 Second Term = 7 + 22 = 11 Third Term = 11 + 23 = 19 Fourth Term = 19 + 24 = 35 Fifth Term = 35 + 25 = 67 Sixth Term = 67 + 26 = 131                    


Que- What will come at the place of question mark ? 8, 22, 64, 190, 568, ? 

a. 1702 

b. 7767 

c. 6992 

d. 6913 


Answer- 1702 

Explanation-   Logic: Previous Term * 3 - 2 = Next term. First Term = 8 Second term = 8 * 3 - 2 = 24 - 2 = 22 Third term = 22 * 3 - 2 = 64 Fourth term = 64 * 3 - 2 = 190 Fifth Term = 190 * 3 - 2 = 568 Sixth Term = 568 * 3 - 2 = 1704 - 2 = 1702                    


Que- What will come at the place of question mark ? 5760,2880,960, 240, 48, ? 

a. 6 

b. 8 

c. 12 

d. None 


Answer- 8 

Explanation-   First Term = 5760. Second term = 5760 /2 = 2880. Third Term = 2880/3 = 960. Fourth term = 960/4 = 240. Fifth term = 240/5 = 48. So, Required term = 48/6 = 8.                    


Que- 7, 10, 8, 11, 9, 12, ... What number should come next? 

a. 7 

b. 10 

c. 12 

d. None 


Answer- 10 

Explanation-   This is a simple alternating addition and subtraction series. In the first pattern, 3 is added; in the second, 2 is subtracted. Alternate Solution : Above Series contains two sub series in it Series 1st = 7, 8, 9, 10  Series 2nd = 10, 11, 12 Note : Both sub series is in ascending order. Next number is greater by 1 from the previous one.   


Que- 36, 34, 30, 28, 24, ... What number should come next? 

a. 20 

b. 22 

c. 23 

d. 26 


Answer- 22 

Explanation-   This is an alternating number subtraction series. First, 2 is subtracted, then 4, then 2, and so on.    


Que- 22, 21, 23, 22, 24, 23, ... What number should come next? 

a. 22 

b. 24 

c. 25 

d. 26 


Answer- 25 

Explanation-   In this simple alternating subtraction and addition series; 1 is subtracted, then 2 is added, and so on.    


Que- 53, 53, 40, 40, 27, 27, ... What number should come next? 

a. 12 

b. 14 

c. 27 

d. 53 


Answer- 14 

Explanation-   In this series, each number is repeated, then 13 is subtracted to arrive at the next number.    


Que- 21, 9, 21, 11, 21, 13, 21, ... What number should come next? 

a. 14 

b. 15 

c. 21 

d. 23 


Answer- 15 

Explanation-   In this alternating repetition series, the random number 21 is interpolated every other number into an otherwise simple addition series that increases by 2, beginning with the number 9.    


Que- 58, 52, 46, 40, 34, ... What number should come next? 

a. 26 

b. 28 

c. 30 

d. 32 


Answer- 28 

Explanation-   This is a simple subtraction series. Each number is 6 less than the previous number.     


Que- 8, 22, 8, 28, 8, ... What number should come next? 

a. 9 

b. 29 

c. 32 

d. 34 


Answer- 34 

Explanation-   This is a simple addition series with a random number, 8, interpolated as every other number. In the series, 6 is added to each number except 8, to arrive at the next number.   


Que- 31, 29, 24, 22, 17, ... What number should come next? 

a. 15 

b. 14 

c. 13 

d. None 


Answer- 15 

Explanation-   This is a simple alternating subtraction series, which subtracts 2, then 5.   


Que- 1.5, 2.3, 3.1, 3.9, ... What number should come next? 

a. 4.2 

b. 4.4 

c. 4.7 

d. 5.1 


Answer- 4.7 

Explanation-   In this simple addition series, each number increases by 0.8.   


Que- 14, 28, 20, 40, 32, 64, ... What number should come next? 

a. 52 

b. 56 

c. 96 

d. None 


Answer- 56 

Explanation-   This is an alternating multiplication and subtracting  series: First, multiply by 2 and then subtract 8.   


Que- 2, 4, 6, 8, 10, ... What number should come next? 

a. 11 

b. 12 

c. 13 

d. None 


Answer- 12 

Explanation-   This is a simple addition series. Each number increases by 2.   


Que- 201, 202, 204, 207, ... What number should come next? 

a. 205 

b. 208 

c. 210 

d. 211 


Answer- 211 

Explanation-   In this addition series, 1 is added to the first number; 2 is added to the second number; 3 is added to the third number; 4 is added to the fourth number; and go on.   


Que- 544, 509, 474, 439, ... What number should come next? 

a. 404 

b. 414 

c. 420 

d. 445 


Answer- 404 

Explanation-   This is a simple subtraction series. Each number is 35 less than the previous number.   


Que- 80, 10, 70, 15, 60, ... What number should come next? 

a. 20 

b. 25 

c. 30 

d. 50 


Answer- 20 

Explanation-   This is an alternating addition and subtraction series. In the first pattern, 10 is subtracted from each number to arrive at the next. In the second, 5 is added to each number to arrive at the next.   


Que- 2, 6, 18, 54, ... What number should come next? 

a. 108 

b. 148 

c. 162 

d. 216 


Answer- 162 

Explanation-   This is a simple multiplication series. Each number is 3 times more than the previous number.   


Que- 5.2, 4.8, 4.4, 4, ... What number should come next? 

a. 3 

b. 3.3 

c. 3.5 

d. 3.6 


Answer- 3.6 

Explanation-   In this simple subtraction series, each number decreases by 0.4.   


Que- 8, 6, 9, 23, 87 , ... What number should come next? 

a. 128 

b. 226 

c. 324 

d. 429 


Answer- 429 

Explanation-   8 x 1 - 2 = 6 6 x 2 - 3 = 9 9 x 3 - 4 = 23 23 x 4 - 5 = 87 87 x 5 - 6 = 429 ...    


Que- 28, 25, 5, 21, 18, 5, 14, ... choose which pair of numbers comes next? 

a. 11, 5 

b. 10, 7 

c. 11, 8 

d. 5, 10  


Answer- 11, 5 

Explanation-   This is an alternating subtraction series with the interpolation of a random number, 5, as every third number. In the subtraction series, 3 is subtracted, then 4, then 3, and so on.   


Que- 8, 11, 21, 15, 18, 21, 22, ... choose which pair of numbers comes next? 

a. 25, 18 

b. 25, 21 

c. 25, 29 

d. 24, 21 


Answer- 25, 21 

Explanation-   This is an alternating addition series, with a random number, 21, interpolated as every third number. The addition series alternates between adding 3 and adding 4. The number 21 appears after each number arrived at by adding 3.    


Que- 9, 16, 23, 30, 37, 44, 51, ... choose which pair of numbers comes next? 

a. 59, 66 

b. 56, 62 

c. 58, 66 

d. 58, 65 


Answer- 58, 65 

Explanation-   Here is a simple addition series, which begins with 9 and adds 7.   

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