BANK & INSURANCE (WRONG NUMBER SERIES PART 1)

Total Questions: 50

11. 17, 22, 32, 52, 82, 172

Correct Answer: (b) 52
Solution:Differences:5,10,20,30,90
Should be ×2 pattern:5,10,20,40,80
52 wrong.
Wrong term: 52

12. 1, 3, 7, 17, 31, 63

Correct Answer: (c) 17
Solution:Let's check the pattern:

- 1 + 2 = 3

- 3 + 4 = 7

- 7 + 8 = 15 ≠ 17

- 15 + 16 = 31

- 31 + 32 = 63

17 is the wrong number, should be 15.

13. 11, 15, 10, 13, 9, 14

Correct Answer: (a) 15
Solution:11 (+1) 12 (-2) 10 (+3) 13 (-4) 9 (+5) 14

So 15 should be 12.

15 is the wrong number.

14. 1, 6, 9, 16, 25, 36

Correct Answer: (b) 6
Solution:Squares: 1²,2²,3²,4²,5²,6²
6 wrong (should be 4).
Wrong term: 6

15. 1, 1, 2, 6, 24, 130

Correct Answer: (c) 130
Solution:Factorials: 1!,1!,2!,3!,4!,5!
5! = 120 (not 130)
Wrong term: 130

16. 18, 30, 42, 54, 68, 78

Correct Answer: (d) 68
Solution:Differences: 12,12,12,14,10
Should be constant +12
68 wrong.
Wrong term: 68

17. 50, 54, 83, 97, 222, 258

Correct Answer: (a) 81
Solution:Let's check with alternate square and cube:

- 50 + 2² = 54

- 54 + 3³ = 81

- 81 + 4² = 97

- 97 + 5³ = 222

- 222 + 6² = 258

So series is correct as given: 50, 54, 83 is wrong, 83 should be 81,  97, 222, 258

83 is the wrong number, should be 81.

18. 112, 116, 130, 148, 172, 202

Correct Answer: (a) 116
Solution:Pattern fits with 6 multiples:

- 112 + 6×1 - 2 = 116

- 116 + 6×2 + 2 = 130

- 130 + 6×3 = 148

- 148 + 6×4 = 172

- 172 + 6×5 = 202

116 is the wrong number, should be 118 (6×1 + 112).

19. 42, 84, 126, 168, 202, 232

Correct Answer: (b) 202
Solution:Multiples of 42: 42,84,126,168,210,252
202 wrong.
Wrong term: 202

20. 198, 239, 196, 245, 190, 249

Correct Answer: (c) 245
Solution:Let's check:

- 198 +41 = 239

- 239 -43 = 196

- 196 +49 = 245

- 245 -55 = 190

- 190 +59 = 249

Differences: +41, -43, +49, -55, +59 (Prime numbers)

- 41, 43, 47(next was 53 missed), 59

Looks like 245 is the wrong number. Should be 243 (196 + 47)

So 245 is the wrong number, should be 243.