BANK & INSURANCE (WRONG NUMBER SERIES PART 1)

Total Questions: 50

1. 14, 18, 25, 35, 50, 64

Correct Answer: (a) 50
Solution:Differences: 4,7,10,15,14
Should increase by +3: 4,7,10,13,16
50 wrong.
Wrong term: 50

2. 334, 315, 277, 220, 144, 45

Correct Answer: (b) 45
Solution:Differences: -19,-38,-57,-76,-99
Should decrease by -19 each time: -19,-38,-57,-76,-95
45 wrong.
Wrong term: 45

3. 4, 4, 12, 39, 160, 805

Correct Answer: (c) 12
Solution:Here's the corrected series : 4, 4, 12, 36, 160, 805

 4 × 1 + 0 = 4

4 × 2 + 4 = 12

12 × 3 + 3 = 39

39 × 4 + 4 = 160

160 × 5 + 5 = 805

So, the wrong number is 12, it should be 36.

4. 243, 162, 108, 72, 48, 31

Correct Answer: (d) 31
Solution:

Pattern: ÷1.5 each time
243÷1.5=162
162÷1.5=108
108÷1.5=72
72÷1.5=48
48÷1.5=32 (not 31)
Wrong term: 31

5. 10, 27, 50, 82, 122, 170

Correct Answer: (a) 27
Solution:Let's check if the series 10, 27, 50, 82, 122, 170 fits the "odd square + 1" pattern:

- 3² + 1 = 10

- 5² + 1 = 26 (not 27)

- 7² + 1 = 50

- 9² + 1 = 82

- 11² + 1 = 122

- 13² + 1 = 170

Looks like the series fits 🎯. So, 27 is the odd one out, should be 26.

6. 2, 6, 15, 28, 55, 78

Correct Answer: (d) none of these
Solution:Let's check:

- 2 × 1 = 2

- 3 × 2 = 6

- 5 × 3 = 15

- 7 × 4 = 28

- 11 × 5 = 55

- 13 × 6 = 78

The series follows the pattern: prime × n

So, all numbers fit 🎯. The series is correct as given: 2, 6, 15, 28, 55, 78

No wrong number here 😊.

7. 144, 72, 36, 18, 9, 4

Correct Answer: (a) 4
Solution:

Pattern: ÷2 each time
144÷2=72
72÷2=36
36÷2=18
18÷2=9
9÷2=4.5 (not 4)
Wrong term: 4

8. 125, 25, 250, 50, 500, 300

Correct Answer: (b) 300
Solution:

Pattern: ÷5, ×10 alternating
125÷5=25
25×10=250
250÷5=50
50×10=500
500÷5=100 (not 300)
Wrong term: 300

9. 120, 141, 183, 242, 330, 435

Correct Answer: (d) 242
Solution:Differences are +21, +42, +63, +88, +105

- 21 × 1 = 21

- 21 × 2 = 42

- 21 × 3 = 63

- 21 × 4 = 84

- 21 × 5 = 105

Following this, 21×4 = 84 is missing, and 242 should be 246.

So 242 is the wrong number 😊. Should be 246.

10. 60, 64, 55, 71, 42, 82

Correct Answer: (a) 42
Solution:Pattern: +4,-9,+16,-29,+40
Should be +4,-9,+16,-25,+36
42 wrong.
Wrong term: 42