Quantitative Aptitude: Number Series Set 125

Directions (1-5): Find the wrong term in the series:-

1. 1.5.., 9.., 24.., 96.., 384.., 1536.
   1.5
   9
   24
   96
   384
   Option B
   1.5 * 4 = 6
   6 * 4 = 24
   24 * 4 = 96
   96 * 4 = 384
   
   
   
    



2. 18.., 20.., 19.., 22.., 22.., 24.., 27
   18
   20
   19
   22
   24
   Option E
   add 1, 2...... to the alternative terms.
   The wrong term is, 24
   
    



3. 11.., 12.., 25.., 76.., 304.., 1526
   11
   12
   25
   76
   304
   Option E
   11 * 1 + 1 = 12
   12 * 2 + 1 = 25
   25 * 3 + 1 = 76
   76 * 4 + 1 = 305
   305 * 5 + 1 = 1526
   1526 * 6 + 1 = 9157
   The wrong term is, 304
   
   
    



4. 90.., 86.., 95.., 79.., 103.., 68.., 117
   90
   86
   103
   68
   95
   Option C
   90, 86, 95, 79, 104, 68, 117
   -4 +9 -16 -25 +36 -49
   The difference is, – 22, + 32, – 42, – 52, – 62, – 72,…..
   The wrong term is, 103
   
   
    



5. 4.., 12.., 60.., 360.., 2520.., 20160
   4
   12
   60
   360
   2520
   Option A
   3 * 4 = 12
   12 * 5 = 60
   60 * 6 = 360
   360 * 7 = 2520
   2520 * 8 = 10160
   The wrong term is, 4
   
   
    


Directions (6-10): Find the number in place of ? in the following series

6. 1.., 16.., 81..., 256..., 625..., 1296.., ..?
   2401
   2210
   2230
   2300
   2450
   Option A
   The pattern of the series is 1^4, 2^4, 3^4, 4^4, 5^4……..
   
    



7. 14.., 17.., 15.., 18.., 16.., 19.., ?
   17
   18
   19
   21
   22
   Option A
   The pattern of the series is +3,-2, +3, -2………..
   
    



8. 7380.., 4428.., 2656.8.., 1594.08.., 956.448.., 573.87.., ?
   344.322
   233.55
   211.77
   322
   333.33
   Option A
   The pattern of the series is *3/5, *3/5, *3/5……………
   
    



9. 7.., 13.., 24.., 40.., 61.., ?
   78
   87
   88
   81
   80
   Option B
   The difference of difference is 5.
   
    



10. 1.6.., 16.., 192.., 2688.., ?.., 774144..
    43008
    44550
    42009
    32008
    46008
    Option A
    The pattern of the series is *10, *12, *14, *16……………