Quantitative Aptitude: Number Series Set 148

Directions: What will come in place of questions mark(?) in the following number series ?

1. 24, 8, 16, 12, 14,?
   7
   13
   28
   11
   10
   Option B
   The series is,24+8/2, 8+16/2, 16+12/2, 12+14/2 =13...
   
    



2. 36, 18, ? 27, 54, 135
   18
   12
   72
   14
   9
   Option A
   The series is, (*.5), (*1), (*1.5)...
   
    



3. 15, 32, 99, 400, 2005, ?
   12048
   12036
   14080
   10025
   12030
   Option B
   The series is, (+1*2), (+1*3), (+1*4)...
   
    



4. 64, 32, 96, 24, 120, ?
   30
   20
   60
   40
   15
   Option B
   The series is, (÷2), (*3), (÷4), (*5)...
   
    



5. 3, 7, 13, 23, 41, ?
   72
   78
   85
   75
   90
   Option D
   The series is difference of difference.
   
    



6. 327, 336, 343, 348, 351, 350
   336
   350
   327
   348
   343
   Option
   The series is, (+9), (+7), (+5), (+3)...
   
    



7. 520, 527, 541, 562, 625, 737
   562
   527
   541
   625
   737
   Option
   The series is, (+7), (+14), (+28), (+56)...
   
    



8. 6, 4, 5, 8.5, 20, 46
   8.5
   20
   5
   4
   6
   Option B
   The series is, (5*1), (*1+1), (*1.5+1), (*2+1), (*2.5+1)...
   
    



9. 33, 38, 45, 63, 83, 108
   38
   63
   83
   33
   45
   Option E
   The series is, (+5), (+10), (+15)...
   
    



10. 105, 107, 110, 115, 122, 131
    122
    131
    110
    115
    107
    Option B
    The series is, (+2), (+3), (+5) addition of prime numbers.
    
     

 

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