ISSB - Pak Army Officer Selection intelligence Number Series — Set 3

Number Series MCQs set 3 for ISSB - Pak Army Officer Selection intelligence — 20 solved questions.

ISSB - Pak Army Officer Selection intelligence Number Series — Set 3

  1. Question 1

    Q1. Next number: 1, 2, 6, 24, 120, ?

    • A) 600
    • B) 720
    • C) 840
    • D) 960

    Answer: 720

    Explanation: Multiply by 2,3,4,5,6 so 120 times 6 is 720. Work each step carefully; ISSB math rewards accuracy under time pressure.

  2. Question 2

    Q2. Next number: 8, 13, 21, 34, 55, ?

    • A) 76
    • B) 84
    • C) 89
    • D) 93

    Answer: 89

    Explanation: Fibonacci style sum of previous two gives 89. Work each step carefully; ISSB math rewards accuracy under time pressure.

  3. Question 3

    Q3. Next number: 3, 5, 9, 17, 33, ?

    • A) 49
    • B) 57
    • C) 65
    • D) 73

    Answer: 65

    Explanation: Pattern doubles and subtracts 1 so 33 times 2 minus 1 is 65.

  4. Question 4

    Q4. Next number: 50, 45, 41, 38, 36, ?

    • A) 33
    • B) 34
    • C) 35
    • D) 37

    Answer: 35

    Explanation: Differences decrease by 1: minus 5,4,3,2 so minus 1 gives 35. Work each step carefully; ISSB math rewards accuracy under time pressure.

  5. Question 5

    Q5. Next number: 10, 20, 40, 80, 160, ?

    • A) 240
    • B) 280
    • C) 320
    • D) 360

    Answer: 320

    Explanation: Each term doubles so next is 320. Work each step carefully; ISSB math rewards accuracy under time pressure.

  6. Question 6

    Q6. Next number: 2, 3, 5, 7, 11, 13, ?

    • A) 15
    • B) 17
    • C) 19
    • D) 21

    Answer: 17

    Explanation: Prime number sequence so next after 13 is 17. Work each step carefully; ISSB math rewards accuracy under time pressure.

  7. Question 7

    Q7. Next number: 81, 64, 49, 36, 25, ?

    • A) 9
    • B) 16
    • C) 20
    • D) 24

    Answer: 16

    Explanation: Descending perfect squares so next is 16. Work each step carefully; ISSB math rewards accuracy under time pressure.

  8. Question 8

    Q8. Next number: 7, 10, 14, 19, 25, ?

    • A) 30
    • B) 31
    • C) 32
    • D) 33

    Answer: 32

    Explanation: Differences 3,4,5,6 so add 7 to get 32. Work each step carefully; ISSB math rewards accuracy under time pressure.

  9. Question 9

    Q9. Next number: 1, 4, 10, 22, 46, ?

    • A) 82
    • B) 90
    • C) 94
    • D) 98

    Answer: 94

    Explanation: Pattern doubles and adds 2 so 46 times 2 plus 2 is 94.

  10. Question 10

    Q10. Next number: 5, 6, 8, 11, 15, 20, ?

    • A) 24
    • B) 25
    • C) 26
    • D) 27

    Answer: 26

    Explanation: Differences increase by 1 each step so add 6 to get 26.

  11. Question 11

    Q11. Next number: 5, 12, 26, 54, ?

    • A) 98
    • B) 102
    • C) 110
    • D) 118

    Answer: 110

    Explanation: Pattern doubles and adds 2 so 54 times 2 plus 2 is 110.

  12. Question 12

    Q12. Next number: 7, 14, 28, 56, 112, ?

    • A) 168
    • B) 196
    • C) 224
    • D) 256

    Answer: 224

    Explanation: Each term doubles so next is 224. 224 is correct because it matches what the question requires. Spot the relationship or pattern quickly under ISSB time limits.

  13. Question 13

    Q13. Next number: 2, 5, 11, 23, 47, ?

    • A) 83
    • B) 91
    • C) 95
    • D) 99

    Answer: 95

    Explanation: Pattern doubles and adds 1 so 47 times 2 plus 1 is 95.

  14. Question 14

    Q14. Next number: 9, 18, 36, 72, 144, ?

    • A) 216
    • B) 252
    • C) 288
    • D) 324

    Answer: 288

    Explanation: Each term doubles so next is 288. 288 is correct because it matches what the question requires. Spot the relationship or pattern quickly under ISSB time limits.

  15. Question 15

    Q15. Next number: 60, 55, 49, 42, 34, ?

    • A) 23
    • B) 24
    • C) 25
    • D) 26

    Answer: 25

    Explanation: Differences decrease by 1: minus 5,6,7,8 so minus 9 gives 25. Spot the relationship or pattern quickly under ISSB time limits.

  16. Question 16

    Q16. Next number: 4, 7, 13, 25, 49, ?

    • A) 85
    • B) 91
    • C) 97
    • D) 103

    Answer: 97

    Explanation: Pattern doubles and subtracts 1 so 49 times 2 minus 1 is 97.

  17. Question 17

    Q17. Next number: 3, 6, 12, 24, 48, ?

    • A) 72
    • B) 84
    • C) 96
    • D) 108

    Answer: 96

    Explanation: Each term doubles so next is 96. 96 is correct because it matches what the question requires. Spot the relationship or pattern quickly under ISSB time limits.

  18. Question 18

    Q18. Next number: 11, 22, 44, 88, 176, ?

    • A) 264
    • B) 308
    • C) 352
    • D) 396

    Answer: 352

    Explanation: Each term doubles so next is 352. 352 is correct because it matches what the question requires. Spot the relationship or pattern quickly under ISSB time limits.

  19. Question 19

    Q19. Next number: 6, 9, 14, 21, 30, ?

    • A) 39
    • B) 41
    • C) 43
    • D) 45

    Answer: 41

    Explanation: Differences 3,5,7,9 so add 11 to get 41. Spot the relationship or pattern quickly under ISSB time limits.

  20. Question 20

    Q20. Next number: 2, 6, 14, 30, 62, ?

    • A) 94
    • B) 110
    • C) 126
    • D) 142

    Answer: 126

    Explanation: Pattern doubles and adds 2 so 62 times 2 plus 2 is 126.