BANK & INSURANCE (WRONG NUMBER SERIES PART 3)

Total Questions: 50

41. 12, 22, 43, 75, 108, 172

Correct Answer: (a) 108
Solution:

12 + 10 = 22
22 + 21 = 43
43 + 32 = 75
75 + 43 = 118 ❌ (given 108)
118 + 54 = 172

Differences should be: 10, 21, 32, 43, 54 (increase by +11 each time)

Correct series should be: 12, 22, 43, 75, 118, 172

Given 108 is wrong.

42. 227, 222, 210, 199, 157, 112

Correct Answer: (b) 199
Solution:

227 − 5×1 = 222
222 − 6×2 = 210
210 − 7×3 = 189 ❌ (given 199)
189 − 8×4 = 157
157 − 9×5 = 112

Correct series should be: 227, 222, 210, 189, 157, 112

Given 199 is wrong.

43. 7, 5, 12, 34, 138, 692

Correct Answer: (c) 692
Solution:

7 × 1 − 2 = 5
5 × 2 + 2 = 12
12 × 3 − 2 = 34
34 × 4 + 2 = 138
138 × 5 − 2 = 688 ❌ (given 692)

Correct series should be: 7, 5, 12, 34, 138, 688

Given 692 is wrong.

44. 9, 13, 22, 47, 98, 217

Correct Answer: (d) 98
Solution:

Differences follow squares: 2², 3², 5², 7², 11² (primes squared pattern)

Correct flow should be:

9 + 2² = 13
13 + 3² = 22
22 + 5² = 47
47 + 7² = 96
96 + 11² = 217

Correct series: 9, 13, 22, 47, 96, 217

Given 98 is wrong.

45. 7, 15, 31, 63, 87, 127

Correct Answer: (a) 63
Solution:

7 + 4×2 = 15
15 + 4×4 = 31
31 + 4×6 = 55 ❌ (given 63)
55 + 4×8 = 87
87 + 4×10 = 127

Correct series should be: 7, 15, 31, 55, 87, 127

Given 63 is wrong.

46. 92, 109, 72, 129, 62, 149

Correct Answer: (b) 62
Solution:

Correct smooth pattern :

17, 37, 57, 77, 97 (increase by +20 each time)

Now apply correctly:

92 + 17 = 109
109 − 37 = 72
72 + 57 = 129
129 − 77 = 52 ❌ (given 62)

So break starts at 62.

Correct series should be: 92, 109, 72, 129, 52, 149

Given 62 is wrong.

47. 125, 155, 215, 305, 425, 555

Correct Answer: (c) 555
Solution:

125 + 30 = 155
155 + 60 = 215
215 + 90 = 305
305 + 120 = 425
425 + 150 = 575 ❌ (given 555)

Differences:
30, 60, 90, 120, 150 (increase by +30 each time)

Correct series should be: 125, 155, 215, 305, 425, 575

Given 555 is wrong.

48. 102, 115, 132, 151, 174, 203

Correct Answer: (d) None of these
Solution:

Full prime sequence after 13 should be:

13, 17, 19, 23, 29

Series follows perfectly.

102 + 13 = 115
115 + 17 = 132
132 + 19 = 151
151 + 23 = 174
174 + 29 = 203

Series is correct.

49. 74, 70, 81, 63, 88, 52

Correct Answer: (a) 81
Solution:

74 − 2² = 70
70 + 3² = 79 ❌ (given 81)
79 − 4² = 63
63 + 5² = 88
88 − 6² = 52

Correct series should be: 74, 70, 79, 63, 88, 52

Given 81 is wrong.

50. 120, 140, 180, 220, 320, 420

Correct Answer: (b) 220
Solution:

120 + 20 = 140
140 + 40 = 180
180 + 60 = 240 ❌ (given 220)
240 + 80 = 320
320 + 100 = 420

Differences should be:

20, 40, 60, 80, 100 (increase by +20 each time)

Correct series should be: 120, 140, 180, 240, 320, 420

Given 220 is wrong.