# Quants Questions: Number Series Set 15

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 !!!

1. 400  240  144  86.4  51.84  31.104  ?
A)19.2466
B)17.2244
C)16.8824
D)18.6624
E)None of these
Explanation :Multiply by 0.6

2. 4    6    9    13.5    20.25   30.375   ?
A)40.25
B)45.5625
C)42.7525
D)48.5625
E)None of these
Explanation :Multiply by 3/2

3. 9  4.5  4.5  6.75  13.5  33.75  ?
A)101.25
B)99.75
C)105.50
D)103.75
E)None of these
Explanation :
9 *1/2=4.5
4.5*1=4.5
4.5*3/2=6.75
6.75*2=13.5
1.5*5/2=33.75
33.75*3= 101.25

4. 7413  7422  7440  ?  7503   7548
A)7456
B)7466
C)7477
D)7464
E)None of these
Explanation : +9,+18,+27,+36,+45

5. 4  8.25  17  34.75  ?
A)42.5
B)70.5
C)4.5
D)80
E)None of these
Explanation : *2+0.25, *2+0.50, *2+0.75, *2+1

6. 128 640 983  1199   1324   ?
A)1541
B)1388
C)1642
D)1288
E)None of these
Explanation : +8^3,+7^3,+6^3,+5^3,+4^3

7. 828 424  220  116  ?  33
A)62
B)69
C)58
D)64
E)None of these
Explanation : 828/2 +10,  424/2 +8,  220/2+6, 116/2+4

8. 123  366   ?   3282   9843
A)1867
B)1104
C)1467
D)1095
E)None of these
Explanation : *3-3………

9. 27  17   ?  4292  237.5   718.5
A)58
B)66
C)84
D)23
E)None of these
Explanation :
27*0.5+0.5*7=17
17*1+1*6=23
23*1.5+1.5*5=42
42*2+2*4=92

10. 522   1235   2661   4800   7652   11217   ?
A)15495
B)16208
C)14782
D)16991
E)None of these