# Aptitude Questions: Number Series Set 17

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 !!!

Find the wrong number in the following series

1. 16, 27, 44, 72, 96,131
A.44
B.72
C.27
D.96
E.None of these
Explanation :
16+11 = 27
27+17 = 44….(11+6 = 17)
44+23 = 67
67+29 = 96
96+35 = 131

2. 43 , 52, 34, 61, 89, 70
A.89
B.70
C.52
D.61
E.None of these
Explanation :
43+(9*1) = 43+9 = 52
52-(9*2) = 52-18=34
34+(9*3) = 34+27 = 61
61-(9*4) = 61-36 = 25
25+(9*5) = 25+45 = 70

3. 78,  38.5, 56.25, 138.125, 324.25
A.56.25
B.38.5
C.138.125
D.324.25
E.None of these
Explanation :
78*0.5-0.5 = 38.5
38.5*1.5-1.5 = 56.25
56.25*2.5-2.5 = 138.125
138.125*3.5-3.5 = 479.94

4. 512, 514, 528, 556, 612
A.556
B.612
C.514
D.528
E.None of these
Explanation :
512 + 2 = 514
514+12 = 526………(12-2 =10+8 = 18+12 =30)
526+30 = 556……..(18+8 = 26+30 = 56)
556+56 = 612 = 612

5. 157, 169.5, 194.5, 222, 282
A.222
B.282
C.194.4
D.169.5
E.None of these
Explanation :
157+12.5 = 169.5
169.5+25 = 194.5
194.5+37.5 = 232
232+50 = 282

6. 213, 220, 337, 697, 1761.5
A.337
B.697
C.1761.25
D.220
E.None of these
Explanation :
213*1+7 = 220
220*1.5+11 = 330+11 = 341
341*2+15 = 682+15 = 697
697*2.5+19 = 1742.5+19 = 1761.5

7. 3, 14, 23, 34, 47, 65
A.23
B.34
C.47
D.65
E.None of these
Explanation :
1*2+1 = 2+1 = 3
3*4+2 = 12+2 = 14
4*5+3 = 20+3 = 23
5*6+4 = 30+4 = 34
6*7+5 = 42+5 = 47
7*8+6 = 56+6 = 62

8. 13, 29.5, 121.5, 732.5, 5863.5
A.5863.5
B.732.5
C.121.5
D.29.5
E.None of these
Explanation :
13*2+3.5 = 26+3.5 = 29.5
29.5*4+3.5 = 118+3.5 = 121.5
121.5*6+3.5 = 729+3.5 = 732.5
732.5*8+3.5 = 5860+3.5 = 5863.5

9. 6, 12, 36, 96, 192, 384
A.36
B.96
C.192
D.384
E.None of these
Explanation :
6*2^0 = 6
6*2^1 = 12
6*2^3 = 48
6*2^4 = 96
6*2^5 = 192
6*2^6 = 384

10. 72, 73.4, 144, 436.2, 1739.2, 8689
A.144
B.8689
C.436.2
D.11739.2
E.None of these