BANK & INSURANCE (WRONG NUMBER SERIES PART 3)

Total Questions: 50

21. 42, 54, 78, 114, 168, 222

Correct Answer: (b) 168
Solution:

42 + 12 = 54
54 + 24 = 78
78 + 36 = 114
114 + 48 = 162 ❌ (given 168)
162 + 60 = 222

Correct series should be: 42, 54, 78, 114, 162, 222

Given 168 is wrong.

22. 121, 129, 139, 151, 165, 181

Correct Answer: (d) None of these
Solution:

121 + 8 = 129
129 + 10 = 139
139 + 12 = 151
151 + 14 = 165
165 + 16 = 181

Differences:
8, 10, 12, 14, 16 (increase by +2 each time)

Series follows the pattern correctly.

No wrong term in the series.

23. 45, 54, 72, 95, 131, 180

Correct Answer: (c) 72
Solution:

45 + 3² = 54
54 + 4² = 70 ❌ (given 72)
70 + 5² = 95
95 + 6² = 131
131 + 7² = 180

Correct series should be: 45, 54, 70, 95, 131, 180

Given 72 is wrong.

24. 37, 38, 42, 50, 77, 158

Correct Answer: (d) 42
Solution:

37 + 3⁰ = 38
38 + 3¹ = 41 ❌ (given 42)
41 + 3² = 50
50 + 3³ = 77
77 + 3⁴ = 158

Correct series should be: 37, 38, 41, 50, 77, 158

Given 42 is wrong.

25. 17, 16, 34, 32, 68, 66

Correct Answer: (a) 66
Solution:

Odd positions:

17 × 2 = 34
34 × 2 = 68

Even positions:

16 × 2 = 32 
32 × 2 = 64 ❌ (given 66)

Now write properly in flow: 17, 16, 34, 32, 68, 64

Correct series should be: 17, 16, 34, 32, 68, 64

Given 66 is wrong.

26. 14, 26, 46, 74, 110, 156

Correct Answer: (b) 156
Solution:

14 + 12 = 26
26 + 20 = 46
46 + 28 = 74
74 + 36 = 110
110 + 44 = 154 ❌ (given 156)

Differences:
12, 20, 28, 36, 44 (increase by +8 each time)

Correct series should be: 14, 26, 46, 74, 110, 154

Given 156 is wrong.

27. 60, 64, 70, 96, 124, 160

Correct Answer: (c) 70
Solution:

60 + 4×1 = 64
64 + 4×3 = 76 ❌ (given 70)
76 + 4×5 = 96
96 + 4×7 = 124
124 + 4×9 = 160

Correct series should be: 60, 64, 76, 96, 124, 160

Given 70 is wrong.

28. 16, 17, 13, 22, 12, 31

Correct Answer: (d) 12
Solution:

16 + 1² = 17
17 − 2² = 13
13 + 3² = 22
22 − 4² = 6 ❌ (given 12)
6 + 5² = 31

Correct series should be: 16, 17, 13, 22, 6, 31

Given 12 is wrong.

29. 2, 10, 32, 68, 130, 222

Correct Answer: (a) 32
Solution:

1³ + 1 = 2
2³ + 2 = 10
3³ + 3 = 30 ❌ (given 32)
4³ + 4 = 68
5³ + 5 = 130
6³ + 6 = 222

Correct series should be: 2, 10, 30, 68, 130, 222

Given 32 is wrong.

30. 4, 8, 16, 32, 48, 80

Correct Answer: (b) 48
Solution:

4 × 2 = 8
8 + 8 = 16
16 × 2 = 32
32 + 8 = 40 ❌ (given 48)
40 × 2 = 80

Correct series should be: 4, 8, 16, 32, 40, 80

Given 48 is wrong.