# Aptitude Questions: Number Series Set 34

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. 5 14 46 165 ? 3525
A. 716
B. 736
C. 746
D. 696
E. None of these
Explanation :
(5 * 1) + (1 * 9) = 14
(14 * 2) + (2 * 9) = 46…..

2. 3 2 3 6 14 ? 116
A. 37.5
B. 47.5
C. 43.6
D. 36.8
E. None of these
Explanation :
3 * 0.5 + 0.5 = 2
2 * 1 + 1 = 3
3 * 1.5 + 1.5 = 6…..

3. 3 8 27 76 ? 696 2099
A. 245
B. 235
C. 275
D. 255
E. None of these
Explanation :
3 * 3 – 1 = 8
8 * 3 + 3 = 27
27 * 3 – 5 = 76…..

4. 972 488 242 123 ? 31.75 13.875
A. 54.5
B. 69.5
C. 87.5
D. 59.5
E. None of these
Explanation :
972 / 2 + 2 = 488
488 / 2 – 2 = 242
242 / 2 + 2 = 123…..

5. 5 293 437 ? 545 563 572
A. 457
B. 592
C. 509
D. 529
E. None of these
Explanation :
5 + 9 * 32 = 293
293 + 9 * 16 = 437
437 + 9 * 8 = 509….

6. 5 12 40 ? 212 387 639
A. 123
B. 103
C. 153
D. 113
E. None of these
Explanation :
5 + 7 * 1² = 12
12 + 7 * 2² = 40
40 + 7 * 3² = 103…..

7. 717 522 335 ? 121 66
A. 222
B. 232
C. 242
D. 252
E. None of these
Explanation :
9³ – 12 = 717
8³ + 10 = 522
7³ – 8 = 335……

8. 2394, 1290, 620, 252, 78, ?
A. 10
B. 12
C. 14
D. 18
E. None of these
Explanation :
7^4 – 7, 6^4 – 6, 5^4 – 5, 4^4 – 4…

9. 15 25 34 ? 464 2330 13980
A. 240
B. 420
C. 150
D. 120
E. None of these
Explanation :
(15 * 1 ) + (1 * 10) = 25
(25 * 2 ) – (2 * 8) = 34
(34 * 3 ) + (3 * 6) = 120
(120 * 4) – (4 * 4) = 464
(464 * 5) + (5 * 2) = 2330
(2330 * 6) – (6 * 0) = 13980

10. 2580 2582 5160 15486 61936 ?
A. 309690
B. 409670
C. 509670
D. 209670
E. None of these