Quantitative Aptitude: Number Series Set 9

Directions: What will come in place of (?) in following series following a certain pattern?

1. 548, 276, 140, 72, 38, ?
   A) 15
   B) 21
   C) 26
   D) 10
   E) 28
   
   View Answer

   Option B
   Pattern:
   548/2 + 2, 276/2 + 2, 140/2 + 2,  72/2 + 2, 38/2 + 2,
   
2. 6, 11, 26, 71, 206, ?
   A) 565
   B) 624
   C) 622
   D) 611
   E) 498
   
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   Option D
   Pattern:
   11 – 6 = 5, 26 – 11 = 15, 71 – 26 = 45, 206 – 71 = 135
   5*3⁰, 5*3¹, 5*3², 5*3³, 5*3⁴
   
3. 5, 9, 25, 97, 481, ?
   A) 2729
   B) 2620
   C) 2321
   D) 2881
   E) 2944
   
   View Answer

   Option D
   Pattern:
   5*2 – 1, 9*3 – 2, 25*4 – 3, 97*5 – 4, 481*6 – 5
   
4. 16, 8, 12, 30, 105,
   A) 422.5
   B) 472.5
   C) 345.5
   D) 432.5
   E) 333.5
   
   View Answer

   Option B
   Pattern:
   16*0.5, 8*1.5, 12*2.5, 30*3.5, 105
   
5. 8, 16, 27, 25, 64, 36, ?
   A) 216
   B) 123
   C) 241
   D) 137
   E) 125
   
   View Answer

   Option E
   Pattern:
   2³, 4², 3³, 5², 4³, 6², 5³
6. 26, 15, 18, 41, 150, ?
   A) 735
   B) 776
   C) 699
   D) 675
   E) 718
   
   View Answer

   Option A
   Pattern:
   26*1 – 11, 15*2 – 12, 18*3 – 13, 41*4 – 14, 150*5 – 15,
   
7. 948, 692, 564, 500, 468, ?
   A) 357
   B) 486
   C) 452
   D) 378
   E) 492
   
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   Option C
   Pattern:
   – 256, – 256/2, – 256/4, – 256/8, – 256/16
   
8. -3, -1, 0, 4, 12, ?
   A) 16
   B) 22
   C) 39
   D) 28
   E) 17
   
   View Answer

   Option D
   Pattern:
   -3 + (4/2) = -1
   -1 + (2/2) = 0
   0 + (2*2) = 4
   4 + (4*2) = 12
   12 + (8*2) = 28
   
9. 32, 24, 28, 58, ?, 1864.5
   A) 335
   B) 233
   C) 259
   D) 231
   E) 343
   
   View Answer

   Option B
   Pattern:
   32*0.5  + 8
   24*1  + 4
   28*2  + 2
   58*4  + 1
   233*8  + 0.5
   
10. 64, 68, 52, 88, 24, ?
    A) 76
    B) 107
    C) 124
    D) 98
    E) 121
    
    View Answer

    Option C
    Pattern:
    + 2^2, – 4^2, + 6^2, – 8^2, + 10^2