Important Number Series Questions with Answer For SSC CHSL
1). 256, 16, 4, ?
(1) 8
(2) 6
(3) 2
(4) 4
2). 1, 6, 13, 22, ?, 46
(1) 32
(2) 33
(3) 40
(4) 43
3). 6, 11, 21, 26, 36, ? , 51
(1) 41
(2) 39
(3) 47
(4) 48
4). 225, 289, ?, 441
(1) 361
(2) 375
(3) 383
(4) 386
5). 4, 10, 22, 46, __?__
(1) 56
(2) 66
(3) 76
(4) 94
6). 2, 5, 9, __?__, 20, 27
(1) 14
(2) 16
(3) 18
(4) 24
7). V, VIII, XI, XIV, ?, XX
(1) XV
(2) XVII
(3) IX
(4) XXIII
8). 48, 82, 44, 77, 40, 72, _?_
(1) 76
(2) 70
(3) 36
(4) 40
9). 7, 8, 10, 13, 17, _?_
(1) 22
(2) 21
(3) 23
(4) 20
10). 69, 72, 78, 87, _?_, 114
(1) 111
(2) 99
(3) 93
(4) 96
11). 62, 61, 63, 62, 64, 63, ____.
(1) 66
(2) 62
(3) 64
(4) 65
12). 70,71, 76,___, 81, 86, 70, 91
(1) 96
(2) 70
(3) 80
(4) 71
13). 36, 34, 30, 28, 24, _?_ .
(1) 22
(2) 23
(3) 26
(4) 20
14). 1, 4, 9, 16, 25, ___, 49
(1) 36
(2) 64
(3) 81
(4) 27
15). 1.5, 2.3, 3.1, 3.9, ?
(1) 3.12
(2) 4.7
(3) 4.9
(4) 5.1
16). Select the number which doesnot belong to the given series :
2, 8, 3, 27, 4, 64, 5, 225
(1) 27
(2) 8
(3) 225
(4) 64
17). Find the wrong number in the given series.
13, 24, 29, 39, 44, 54, 61, 69
(1) 61
(2) 13
(3) 44
(4) 24
18). Find the wrong number in the given series :
6, 14, 31, 64, 137, 280
(1) 31
(2) 64
(3) 137
(4) 280
19). Find the wrong number in the given series.
8, 16, 24, 40, 62, 104, 168
(1) 24
(2) 40
(3) 62
(4) 104
20). Find the wrong number in the given series.
20, 40, 200, 400, 2000, 4000, 8000
(1) 200
(2) 2000
(3) 8000
(4) 4000
21). How many times is 9 preceded by either 6 or 1 and followed by either 5 or 8 in the following series ?
895176982198435913695
(1) 1
(2) 2
(3) 3
(4) 4
22). Which number is wrong in the series ?
5, 11, 23, 47, 96
(1) 47
(2) 23
(3) 96
(4) 11
23). Which is the wrong term in the series?
25, 36, 49, 81, 121, 169, 225
(1) 36
(2) 121
(3) 49
(4) 81
24). Find out the odd/wrong number in the given series:
62, 46, 34, 24, 16, 10
(1) 62
(2) 46
(3) 34
(4) 24
25). Find out the wrong number in the sequence
102, 101, 98, 93, 86, 74, 66, 53
(1) 101
(2) 66
(3) 74
(4) 93
