# Aptitude Questions: Number Series Set 23

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. 17 25 32 37 47 ?
a) 55
b) 58
c) 65
d) 71
e) None of these
Explanation :
17 + (1+7) = 25
25 + (2+5) = 32
32 + (3+2) = 37
37 + (3+ 7) = 47
47 + (4 +7) = 58

2. 100 112 132 160 196 ?
a) 210
b) 220
c) 230
d) 240
e) None of these
Explanation :
100 +(4^2 – 2^2) = 112
112 + (6^2 – 4^2) = 132
132 + (8^2 – 6^2) = 160
160 + (10^2 – 8^2) = 196
196 + (12^2 – 10^2) = 240

3. 57 82 182 407 807 ?
a) 1428
b) 1432
c) 1436
d) 1456
e) None of these
Explanation :
57 + 5^2 = 82
82 + 10^2 = 182
182 + 15^2 = 407
407 + 20^2 = 807
807 + 25^2 = 1432

4. 10 10 15 30 75 ?
a) 175
b) 125
c) 225
d) 250
e) None of these
Explanation :
*1, *3/2, *2, *5/2, *3

5. 350 175 87.5 ? 21.875 10.9375
a) 43.75
b) 47.25
c) 43.25
d) 47.75
e) None of these
Explanation :
multiply each term by 0.5

6. 65 132 262 526 1050 ?
a) 2102
b) 2202
c) 2302
d) 2402
e) None of these
Explanation :
65*2 + 2 =132
132*2 – 2 = 262
262*2 + 2 = 526
526*2 – 2 = 1050
1050*2 + 2 = 2102

7. 50 95 215 305 1235 ?
a) 655
b) -655
c) 455
d) -455
e) None of these
Explanation :
50*2 – 5 = 95
95*2 + 25 = 215
215*2 – 125 =305
305*2 + 625 = 1235
1235*2 – 3125 = -655

8. 45 22.5 33.75 84.375 289.3125 ?
a) 1228.90625
b) 1386.90625
c) 1268.90625
d) 1328.90625
e) None of these
Answer – e) None of these
Explanation :
*0.5, *1.5, *2.5, *3.5, *4.5

9. 22.5 33.75 ? 75.9375 113.90625
a) 50.625
b) 50.675
c) 55.625
d) 55.675
e) None of these
Explanation :
multiply each term by 3/2

10. 36 39 48 63 84 111 ?
a) 141
b) 142
c) 143
d) 144
e) None of these