# Aptitude Questions: Number Series Set 44

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. Only one number is wrong which does not fit in the series. Find out the wrong number.

1. 34, 40, 57, 86, 128, 185, 255
1.40
2.128
3.57
4.185
5.None of these
Explanation :
40 – 34 = 6
57 – 40 = 17
86 – 57 = 29
128 – 86 = 42; 17 – 6 = 11; 29 – 17 = 12; 42 – 29 = 13
Wrong Number: 185
Correct Number: 184

2. 8, 12, 23, 73, 297, 1491, 8953
1.8952
2.8
3.298
4.10
5.None of these
Explanation :
8 * 1 + 2 = 10
10 * 2 + 3 = 23
23 * 3 + 4 = 73
73 * 4 + 5 = 297
297 * 5 + 6 = 1491
Wrong Number: 12
Correct Number: 10

3. 7, 4, 5, 9, 21, 52.5, 160.5
1.160.5
2.5
3.21
4.7
5.None of these
Explanation :
7 * 0.5 + 0.5 = 4
4 * 1 + 1 = 5
5 * 1.5 + 1.5 = 9
9 * 2 + 2 = 20
20 * 2.5 + 2.5 = 52.5
Wrong Number: 21
Correct Number: 20

4. 14 21 30 105 404 2045 12198
1. 21
2. 14
3. 30
4. 2045
5. None of these
Answer – 3. 1538
Answer – 4. 2045
Explanation :
Explanation :
14 * 1 + (1 * 7) = 21
21 * 2 – (2 * 6) = 30
30 * 3 + (3 * 5) = 105
105 * 4 – (4 * 4) = 404
404 * 5 + (5 * 3) = 2035
Wrong Number: 2045
Correct Number: 2035

5. 434, 418, 393, 357, 308, 244, 153
1.357
2.393
3.418
4.153
5.None of these
Explanation :
434 – 42= 418
418 – 52= 393
393 – 62= 357
357 – 72= 308
308 – 82= 244
244 – 92= 163
Wrong Number: 153
Correct Number: 163

6. 8, 19, 42, 74, 118, 173, 239
1.42
2.239
3.19
4.8
5.None of these
Explanation :
8 + 11 = 19
19 + 22 = 41
41 + 33 = 74
74 + 44 = 118
118 + 55 = 173
Wrong Number: 42
Correct Number: 41

7. 40, 45, 60, 75, 120, 165, 220
1.60
2.40
3.75
4.165
5.None of these
Explanation :
40 + 5 * 1 = 45
45 + 5 * 3 = 60
60 + 5 * 5 = 85
85 + 5 * 7 = 120
120 + 5 * 9 = 165
165 + 5 * 11 = 220
Wrong Number: 75
Correct Number: 85

8. 960 953 939 918 890 855 810
1. 960
2. 953
3. 855
4. 939
5. None of these
Answer – 5. None of these
Explanation :
960 – 7 = 953
953 – 14 = 939
939 – 21 = 918……
Wrong Number: 810
Correct Number: 813

9. 972 484 240 118 57 26 11.25
1. 240
2. 130
3. 57
4. 26
5. None of these
Answer – 2. 130
Answer – 4. 26
Explanation :
972/2 – 2 = 484
484/2 – 2 = 240
240/2 – 2 = 118
118/2 – 2 = 57……
Wrong Number: 26
Correct Number: 26.5

10. 5 6 16 57 240 1245 7506
1. 5
2. 57
3. 240
4. 7
5. None of these
Explanation :
Answer – 3. 240
Explanation :
5 * 1 + (1*1) = 6
6 * 2 + (2*2) = 16
16 * 3 + (3*3) = 57
Wrong Number: 240
Correct Number: 244

AffairsCloud Recommends Oliveboard Mock Test

AffairsCloud Ebook - Support Us to Grow