# Quantitative Aptitude Quiz – 21

Dear aspirants

Welcome to D2G clerk express quantitative aptitude quiz.

This post contains questions related to clerk prelims.

1. 25, 42, 85, 174, 335, ?
1) 525    2) 575    3) 600     4) 612    5) 650

ANS: 3

The series is + 13 + 22, + 23 + 32, + 33 + 42…

2. 365, 728, 2160, 8532, 42340, ?
1) 253275    2) 253280    3) 253285     4) 253290     5) 253295

ANS: 4

The series is – 13 × 2, – 23 × 3, – 33 × 4…

3. 2   4   12   48   240   ?
1) 1920    2) 960    3) 1080   4) 1440   5) None of these

ANS: 4

The series is:
2 × 2 = 4
4 × 3 = 12
12 × 4 = 48
48 × 5 = 240

240 x 6=1440

4. 62, 177, 512, 1507, 4482, ?
1) 13396   2) 13397   3) 13398   4) 13399   5) 13400

ANS: 2

The series is × 3 – 9, × 3 – 19, × 3 – 29…

5. 21, 12342, 22543, 30824, 37385, ?
1) 42422   2) 42424   3) 42426   4) 42428   5) 42430

ANS:3

The series is + (111)2, + (101)2, + (91)2, + (81)2…

6. 7    26   63    124    215   342    ?
1) 481  2) 511    3) 391   4) 421   5) 451

ANS: 2

The series is:
23 – 1 = 7
33 – 1 = 26
43 – 1 = 63
53 – 1 = 124
63 – 1 = 215
73 – 1 = 342
83 – 1 = 511

7. 800, 160, 48, 19.2, 9.6, ?
1) 6.48   2) 5.76   3) 5.12   4) 4.84   5) 4.56

ANS: 2

The series is × 0.2, × 0.3, × 0.4, × 0.5…

8. 165   195   255   285   345   ?
1) 375   2) 420   3) 435   4) 390   5) None of these

ANS: 3

The series is:
15 × 11 = 165
15 × 13 = 195
15 × 17 = 255
15 × 19 = 285
15 × 23 = 345
15 × 29 = 435

9. 8   7   11   12   14   17   17   22   ?
1) 20    2) 22    3) 24   4) 27    5) None of these

ANS:1

there are 2 series

8 11 14  17  20 and 7  12  17  22

10. 11   13   17   19   23   29   31   37   ?
1) 47    2) 43    3) 41    4) 39    5) None of these