BANK & INSURANCE (WRONG NUMBER SERIES PART 3)

Total Questions: 50

1. 2, 4, 8, 48, 240, 1440

Correct Answer: (a) 8
Solution:

2 × 2 = 4
4 × 3 = 12 ❌ (given 8)
12 × 4 = 48
48 × 5 = 240
240 × 6 = 1440

Correct series should be: 2, 4, 12, 48, 240, 1440

Given 8 is wrong.

2. 5, 12, 26, 60, 110, 222

Correct Answer: (b) 60
Solution:

5 × 2 + 2 = 12
12 × 2 + 2 = 26
26 × 2 + 2 = 54 ❌ (given 60)
54 × 2 + 2 = 110
110 × 2 + 2 = 222

Correct series should be: 5, 12, 26, 54, 110, 222

Given 60 is wrong.

3. 12, 17, 27, 52, 62, 87

Correct Answer: (c) 52
Solution:

12 + 5×1 = 17
17 + 5×2 = 27
27 + 5×3 = 42 ❌ (given 52)
42 + 5×4 = 62
62 + 5×5 = 87

Correct series should be: 12, 17, 27, 42, 62, 87

Given 52 is wrong.

4. 20, 31, 24, 35, 28, 46

Correct Answer: (d) 46
Solution:

20 + 11 = 31
31 − 7 = 24
24 + 11 = 35
35 − 7 = 28
28 + 11 = 39 ❌ (given 46)

Correct series should be: 20, 31, 24, 35, 28, 39

Given 46 is wrong.

5. 18, 22, 13, 29, 14, 40

Correct Answer: (a) 14
Solution:

18 + 2² = 22
22 − 3² = 13
13 + 4² = 29
29 − 5² = 4 ❌ (given 14)
4 + 6² = 40

Correct series should be: 18, 22, 13, 29, 4, 40

Given 14 is wrong.

6. 25, 26, 30, 39, 55, 78

Correct Answer: (b) 78
Solution:

25 + 1² = 26
26 + 2² = 30
30 + 3² = 39
39 + 4² = 55
55 + 5² = 80 ❌ (given 78)

Correct series should be: 25, 26, 30, 39, 55, 80

Given 78 is wrong.

7. 18, 19, 22, 27, 35, 43

Correct Answer: (c) 35
Solution:

18 + 1 = 19
19 + 3 = 22
22 + 5 = 27
27 + 7 = 34 ❌ (given 35)
34 + 9 = 43

Correct series should be: 18, 19, 22, 27, 34, 43

Given 35 is wrong.

8. 14, 15, 19, 28, 44, 72

Correct Answer: (d) 72
Solution:

14 + 1² = 15
15 + 2² = 19
19 + 3² = 28
28 + 4² = 44
44 + 5² = 69 ❌ (given 72)

Correct series should be: 14, 15, 19, 28, 44, 69

Given 72 is wrong.

9. 200, 201, 203, 215, 228, 245

Correct Answer: (a) 203
Solution:

200 + 1 = 201
201 + 5 = 206 ❌ (given 203)
206 + 9 = 215
215 + 13 = 228
228 + 17 = 245

Correct series should be: 200, 201, 206, 215, 228, 245

Given 203 is wrong.

10. 20, 21, 23, 29, 64, 173

Correct Answer: (b) 64
Solution:

20 + 1 = 21
21 + 2 = 23
23 + 6 = 29
29 + 24 = 53 ❌ (given 64)
53 + 120 = 173

Observe factorial pattern in differences:

1 = 1!
2 = 2!
6 = 3!
24 = 4!
120 = 5!

Correct series should be: 20, 21, 23, 29, 53, 173

Given 64 is wrong.