BANK & INSURANCE (WRONG NUMBER SERIES PART 1)

Total Questions: 50

31. 42, 87, 150, 231, 330, 445

Correct Answer: (b) 445
Solution:Differences: 45, 63, 81, 99, 115
Should increase by +18 each: 45,63,81,99,117
Last term should be 447.330
Wrong term: 445

32. 12, 16, 36, 112, 452, 2262

Correct Answer: (c) 2262
Solution:Pattern: ×1+4, ×2+4, ×3+4, ×4+4, ×5+4
12×1+4=16
16×2+4=36
36×3+4=112
112×4+4=452
452×5+4=2264 (not 2262)
Wrong term: 2262

33. 5, 21, 53, 115, 245, 501

Correct Answer: (d) 115
Solution:Pattern: ×2+11, ×2+11...
5×2+11=21
21×2+11=53
53×2+9=115 (pattern breaks)
Correct 53×2+11=117
Wrong term: 115

34. 132, 148, 126, 150, 120, 156

Correct Answer: (a) 148
Solution:

+12, −18, +24, −30, +36 (Absolute values increasing by 6)

Let’s apply this from 132:

132 + 12 = 144
144 − 18 = 126
126 + 24 = 150
150 − 30 = 120
120 + 36 = 156

So correct series should be: 132, 144, 126, 150, 120, 156

148 is the wrong term

35. 151, 191, 263, 317, 407, 477

Correct Answer: (a) 191
Solution:

Correct pattern is:

12² + 7 = 151
14² − 7 = 189
16² + 7 = 263
18² − 7 = 317
20² + 7 = 407
22² − 7 = 477

So the second term should be 189, not 191.

191 is the wrong term.

36. 145, 161, 125, 189, 99, 233

Correct Answer: (b) 99
Solution:

Pattern: +16, -36, +64, -90, +134
Squares: 4²,6²,8²,10²,12²
Wrong term: 99

37. 89, 101, 125, 173, 269, 463

Correct Answer: (c) 463
Solution:Differences: 12,24,48,96,194
Should double each time: 12,24,48,96,192
Last should be 461.
Wrong term: 463

38. 12, 11, 24, 69, 280, 1390

Correct Answer: (d) 1390
Solution:Pattern: ×1-1, ×2+2, ×3-3, ×4+4, ×5-5
Check:
12×1-1=11
11×2+2=24
24×3-3=69
69×4+4=280
280×5-5=1395 (not 1390)
Wrong term: 1390

39. 144, 153, 174, 199, 210, 229

Correct Answer: (a) 210
Solution:Difference Pattern:

9 × 1 = 9
7 × 3 = 21
5 × 5 = 25
3 × 7 = 21
1 × 9 = 9

Correct Series:

144 + 9 = 153
153 + 21 = 174
174 + 25 = 199
199 + 21 = 220
220 + 9 = 229

So correct series should be: 144, 153, 174, 199, 220, 229

210 is the wrong term.

40. 18, 40, 60, 132, 202, 408

Correct Answer: (b) 60
Solution:Pattern:
×2 + 4
×1.5 + 4
×2 + 4
×1.5 + 4
×2 + 4

Correct series should be: 18, 40, 64, 132, 202, 408

60 is the wrong term.