Quantitative Aptitude: Number Series Set 99

Directions(1-5): Find the missing number '?' of the following series.

1. 45, 46, 70, 141, ?, 1061.5
   234.4
   324.2
   353.5
   300.4
   256.9
   Option C
   *1+1
   *1.5+1
   *2+1
   *2.5+1
   ? = 141*2.5+1 = 353.5
   
   
    



2. 5, 26, 68, 152, 320, ?
   661
   600
   656
   560
   616
   Option C
   +21,+42,+84,+168,+336
   ? = 320+336 = 656
   
   
    



3. 6561, 2187, 364.5, 40.5, 3.375, ?
   0.223
   0.200
   0.515
   0.127
   0.225
   Option E
   /3,/6,/9,/12,/15
   ? = 3.375/15 = 0.225
   
   
    



4. 2, 8, 44, 260, 1556, ?
   8939
   9000
   9332
   9119
   8900
   Option C
   +6,+36,+216,+1296,+7776
   ? = 1556+7776 = 9332
   
   
    



5. 29160, 9720, 1620, 180, 15, ?
   1
   4
   3
   5
   2
   Option A
   /3,/6,/9,/12,/15
   ? = 15/15 = 1
   
   
    
Directions(6-10): Find the wrong number of the following series.


6. 0, 4, 18, 54, 100, 180
   4
   18
   0
   54
   100
   Option D
   1^3 – 1^2
   2^3 – 2^2
   3^3 – 3^2
   4^3 – 4^2
   5^3 – 5^2
   6^3 – 6^2
   48 should be in place of 54.
   
   
    



7. 54, 58, 117, 354, 1419, 7098
   117
   58
   54
   1419
   7098
   Option B
   1*3
   2*3
   3*3
   4*3
   5*3
   57 should be in place of 58.
   
   
    



8. 32, 18, 10.8, 6.48, 3.888
   18
   10.8
   32
   6.48
   3.888
   Option C
   *0.6, *0.6, *0.6, *0.6
   18 should be in place of 32.
   
   
   
    



9. 169, 184 , 139, 216, 109
   169
   139
   216
   184
   109
   Option C
   +(15*1)
   -(15*3)
   +(15*5)
   -(15*7)
   214 should be in place of 216.
   
   
    



10. 1524, 1541, 1576, 1626, 1694
    1524
    1541
    1576
    1626
    1694
    Option C
    +17*1
    +17*2
    +17*3
    +17*4
    +17*5
    1575 should be in place of 1576.