Quantitative Aptitude: Number Series Set 50

Directions: The following series are based on a specific pattern. Find the next number following the pattern.

  1. 3072, 192, 24, 6, ?, 3
    A) 3
    B) 4
    C) 4.5
    D) 3.5
    E) None of these
    View Answer
      Option A
    Explanation
    :
    /16, /8, /4, /2, /1
  2. 104, 102, 96, 84, ?, 34
    A) 71
    B) 52
    C) 45
    D) 64
    E) 58
    View Answer
      Option D
    Explanation
    :
    104……………102…………..96……………84…………..64………….34
    ……….-2……………-6…………….-12…………..-20………….-30
    ………2*1                2*3           2*6                   2*10            2*15
  3. 11, 5, 4, 4.5, 7, ?
    A) 28
    B) 23
    C) 19
    D) 32
    E) 15
    View Answer
      Option E
    Explanation
    :
    *0.5 – 0.5, *1 – 1,*1.5 – 1.5, *2 – 2, *2.5 – 2.5
  4. 3, 4, 9, 28, 113, ?
    A) 205
    B) 566
    C) 475
    D) 530
    E) 685
    View Answer
      Option B
    Explanation
    :
    *1 + 1, *2 + 1, *3 + 1, *4 + 1, *5 + 1
  5. 6, 280, 410, 468, 490, ?
    A) 498
    B) 494
    C) 509
    D) 512
    E) 533
    View Answer
      Option B
    Explanation
    :
    6…………..280…………410………….468………..490……..494
    …..+274………..+130……….+58………….+22……….+4
    …….(274 – 14)/2 = 130
    ….(130-14)/2 = 58
    (58 – 14)/2 = 22
    (22-14)/2 = 4
  6. 3, 4, 10, 33, 136, ?
    A) 613
    B) 637
    C) 685
    D) 651
    E) 648
    View Answer
      Option C
    Explanation
    :
    *1 + 1, *2 + 2, *3 + 3, *4 + 4, *5 + 5
  7. 5, 3, 3, 5, 15, ?
    A) 75
    B) 69
    C) 68
    D) 55
    E) 80
    View Answer
      Option B
    Explanation
    :
    *1 – 2, *2 – 3, *3 – 4, *4 – 5, *5 – 6
  8. 628, 308, 148, 68, 28, ?
    A) 20
    B) 24
    C) 15
    D) 11
    E) 8
    View Answer
      Option E
    Explanation
    :
    (628-12)/2 = 308
    (308-12)/2 = 148
    (148-12)/2 = 68……..
    (28-12)/2 = 8
  9. 5, 10, 16, 26, 45, ?
    A) 89
    B) 93
    C) 109
    D) 78
    E) 111
    View Answer
      Option A
    Explanation
    :
    5…………10…………..16…………….26…………….45………..89
    …..+5………..+6…………..+10………….+19………….+44
    …………+1………..+4…………….+9…………….+25
     
  10. 31185, 2835, 315, 45, ?, 3
    A) 9
    B) 12
    C) 5
    D) 18
    E) 16
    View Answer
      Option A
    Explanation
    :
    /11, /9, /7, /5, /3

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