# Aptitude Questions: Number Series Set 22

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 !!!

Questions Penned by Yogit

1. 10 13 20 33 54 ?
a) 82
b) 83
c) 84
d) 85
e) None of these
Explanation :
10 + (2^2 – 1) = 13
13 + (3^2 -2) = 20
20 + (4^2 -3) = 33
33 + (5^2 – 4) = 54
54 + (6^2 – 5) = 85

2. 10 52 253 1006 3013 ?
a) 5022
b) 6022
c) 7022
d) 8022
e) None of these
Explanation :
10*6 -8 = 52
52 *5 – 7 = 253
253 *4 – 6 = 1006
1006 *3 – 5 = 3013
3013 *2 – 4 = 6022

3. 50 25 25 50 200 1600 ?
a) 25200
b) 25300
c) 25600
d) 17800
e) None of these
Explanation :
50*(1/2) = 25
25 *1 = 25
25 *2 = 50
50 *4 = 200
200 *8 = 1600
1600 *16 = 25600

4. 20 23 51 160 651 ?
a) 3268
b) 3264
c) 3246
d) 3278
e) None of these
Explanation :
20*1 + 3 = 23
23*2 + 5 = 51
51*3 + 7 = 160
160*4 + 11 = 651
651*5 + 13 = 3268

5. 100 200 250 275 287.5 ?
a) 291.75
b) 292.75
c) 294.75
d) 279.75
e) None of these
Answer – e) None of these
Explanation :
+100, +50, +25, +12.50, + 6.25 (divide the difference by 2)

6. 36 39 48 63 84 111 ?
a) 141
b) 142
c) 143
d) 144
e) None of these
Explanation :
36 + 3*1 = 39
39 + 3*3 = 48
48 + 3*5 = 63
63 + 3*7 = 84
84 + 3*9 = 111
111 + 3*11 = 144

7. 45 89 265 1057 5281 ?
a) 31689
b) 31681
c) 31481
d) 38241
e) None of these
Explanation :
45*2 – 1 = 89
89*3 – 2 = 265
265*4 – 3 = 1057
1057*5 – 4 = 5281
5281*6 -5 = 31681

8. 90 93 102 129 210 ?
a) 423
b) 443
c) 453
d) 463
e) None of these
Explanation :
90 + 3^1 = 93
93 + 3^2 = 102
102 + 3^3 = 129
129 + 3^4 = 210
210 + 3^5 = 453

9. 61 124 246 494 986 ?
a) 1972
b) 1976
c) 1974
d) 1978
e) None of these
Explanation :
61*2 +2 = 124
124*2 – 2 = 246
246*2 + 2 = 494
494*2 – 2 = 986
986*2 +2 = 1974

10. 26 65 124 217 342 ?
a) 511
b) 512
c) 513
d) 514
e) None of these