Aptitude Questions – Number Series Set 55

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Welcome to Online Quantitative Aptitude Section in AffairsCloud.com. Here we are creating question sample in Number Series based on latest pattern, which is common for SBI,IBPS, RBI,LIC, NICL and other  competitive exams.

1. 6,6, 9, ?, 90, 540
A.22.5
B.21
C.23.2
D.24.5
E.None of these
Explanation :
6*1 = 6
6*1.5 = 9
9*2.5 = 22.5
22.5*4 = 90
90*6 = 540

2. 21, ?, 35, 57, 89, 131
A.28
B.21
C.26
D.23
E.None of these
Explanation :
21+2 = 23
23+12 =35
35+22 = 57
57+32 =89
89+42 = 131

3. 3, 14, 39, 103, 270, ?
A.606
B.505
C.707
D.404
E.None of these
Explanation :
3+11= 14
14+(11+14 =25) =39
39+(25+39 = 64) = 103
103+(64+103 = 167) =270
270+(167+270=437) =  707

4. 14, 18, ?, 458, 4458
A.128
B.58
C.48
D.44
E.None of these
Explanation :
14+4 = 18
18+40 = 58
58+400 = 458
458+4000 = 4458

5. 112, 113, 102, 213, ?
A.899
B.-988
C.899
D.-898
E.None of these
Explanation :
112+1 = 113
113-11 = 102
102+111 = 213
213-1111 = -898

6. 221, 55, 224, 55, 236, ?, 257
A.242
B.55
C.254
D.57.25
E.None of these
Explanation :
(221-1)/4 = 55
(55+1)*4 = 224
(224-4)/4 = 55
(55+4)*4 = 236
(236-7)/4 = 57.25
(57.25+7)*4 = 257

7. 15, 80, 255, ?, 1295
A.615
B.625
C.525
D.624
E.None of these
Explanation :
2^4 = 16-1 = 15
3^4 = 81-1 = 80
4^4 = 256-1 = 255
5^4 = 625-1 = 624
6^4 = 1296-1 = 1295

8. ?, 45, 90, 88, 176, 178, 356
A.52
B.39
C.43
D.65
E.None of these
Explanation :
43+2 = 45
45*2 = 90
90-2 = 88
88*2 = 176
176+2 = 178
178*2 = 356

9. 68, 80, 98, 122, ?, 188
A.134
B.152
C.122
D.148
E.None of these
Explanation :
68+12+0 = 80
80+12+6 =98
98+12+12 = 122
122+12+18 = 152
152+12+24 = 188

10. 17, 10, 12, 20.5, ?
A.44
B.51
C.37
D.63
E.None of these