# Aptitude Questions: Number Series Set 47

Hello Aspirants. Welcome to Online Quantitative Aptitude Section in AffairsCloud.com. Here we are creating question sample in Number Series, which is common for all the competitive exams. We have included Some questions that are repeatedly asked in bank exams !!!

Directions (1-10): In these questions, a number series is given. Find out the wrong number in the series.

1. 2, 8, 12, 27, 58, 121
A. 8
B. 12
C. 27
D. 58
E. 121
Answer – A. 8
Explanation :
Wrong Number: 8
Correct Number: 5 2. 895, 870, 821, 740, 619, 445
A. 895
B. 870
C. 821
D. 619
E. 445
Answer – E. 445
Explanation :
Wrong Number: 445
Correct Number: 450 3. 664, 320, 150, 67, 28, 9.75
A. 664
B. 150
C. 67
D. 28
E. 150
Answer – D. 28
Explanation :
Wrong Number: 28
Correct Number: 27.50 4. 8, 13, 9, 11, 10, 15
A. 8
B. 13
C. 11
D. 10
E. 15
Answer – C. 11
Explanation :
Wrong Number: 11
Correct Number: 14 5. 16, 9, 8, 13, 25, 64
A. 64
B. 9
C. 13
D. 8
E. 16
Answer – A. 64
Explanation :
Wrong Number: 64
Correct Number: 63.5
16 * 0.5 + 1 = 9
9 * 1 – 1 = 8
8 * 1.5 + 1 = 13

6. 12, 13, 24, 75, 296, 1480
A. 13
B. 296
C. 24
D. 1485
E. 12
Answer – D. 1485
Explanation :
Wrong Number: 470
Correct Number: 465
12 * 1 + 1 = 13
13 * 2 – 2 = 24
24 * 3 + 3 = 75
75 * 4 – 4 = 296
296 * 5 + 5 = 1485

7. 11, 13, 16, 33, 100, 353
A. 13
B. 33
C. 16
D. 353
E. 100
Answer – E. 100
Explanation :
Wrong Number: 100
Correct Number: 96
11 + 1² + 1= 13
13 + 2² – 1= 16
16 + 4² + 1= 33……..

8. 4, 20, 120, 595, 2376 7125
A. 7125
B. 120
C. 20
D. 595
E. 2376
Answer – C. 20
Explanation :
Wrong Number: 20
Correct Number: 21
4*7 -7 = 21
21*6 -6 = 120
120*5 -5 = 595.

9. 64, 60, 75, 103, 168, 294
A. 64
B. 60
C. 75
D. 294
E. 103
Answer – B. 60
Explanation :
Wrong Number: 60
Correct Number: 66
64 + (1³ + 1) = 66
66 + (2³ + 1) = 75
75 + (3³ + 1) = 103

10. 13, 25, 39, 50, 83, 125
A. 39
B. 25
C. 125
D. 13
E. 50
Answer – E. 50
Explanation :
Wrong Number: 50
Correct Number: 57
13*2 – 1 = 25
25*2 – 11 = 39
39*2 – 21 = 57

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