# Quants Questions : Number Series Set 13

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. 3, 14, 67, 330, ?
A)1879
B)1643
C)1245
D)1678
E)None of these
B)1643
Explanation :
3*5-1 = 14
14*5 – 3 = 67
67*5-5 = 330
330*5-7 = 1643

2. 17, 17, 34, 136, ?
A)2345
B)3214
C)1088
D)1546
E)None of these
C)1088
Explanation :
17*1 = 17
17*2 = 34
34*4 = 136
136*8 = 1088

3. 5, 8, 12, 16, ?
A)24
B)54
C)36
D)16
E)None of these
D)16
Explanation :
(5*2) – 2 = 8
(8*2)- 4 = 12
(12*2) – 8 = 16
(16*2) – 16 = 16

4. 124, 115,140, 131,156, 147, ?
A)172
B)168
C)159
D)181
E)None of these
A)172
Explanation :
124 – 9 = 115
115 +25 = 140
140-9 = 131
131+25 = 156
156-9 = 147
147+25 = 172

5. 672, 681, 663, 672, 654, ?
A)675
B)643
C)663
D)687
E)None of these
C)663
Explanation :
672+9 = 681
681-18 = 663
663+9 = 672
672-18 = 654
654+9 = 663

6. 122, 73, 110, 305, ?
A)1540
B)1234
C)1406
D)1204
E)None of these
D)1204
Explanation :
(122*1) – 49 = 73
(73*2) – 36 = 110
(110*3) – 25 = 305
(305*4) – 16 = 1204

7. 346, 173, 259.5, 648.75, ?
A)1560.54
B)2270.62
C)1450.25
D)2125.75
E)None of these
B)2270.62
Explanation :
(346÷2)*1 = 173
(173÷2)*3 = 259.5
(259.5÷2)*5 = 648.75
(648.75÷2)*7 =2270.62

8. 19, 21.5, 151.5, ?
A)326.9
B)432.4
C)570.6
D)616
E)None of these
D)616
Explanation :
19*1 + 2.5 = 21.5
21.5*2 + 5 = 48
48*3 + 7.5 = 151.5
151.5*4+10 = 616

9. 731, 769, 845, 959, ?
A)1111
B)1234
C)1076
D)1305
E)None of these
A)1111
Explanation :
731+ 38 = 769
769+76 = 845
845+114 = 959
959+152 = 1111

10. 21, 33, 102, 463.5 ?
A)2787
B)1245
C)1678
D)2134
E)None of these
A)2787
Explanation :
(21*1.5) + 1.5 = 33
(33*3) + 3 = 102
(102*4.5) + 4.5 = 463.5
(463.5*6) + 6 = 2787