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Aptitude Questions: Number Series Set 50

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Hello Aspirants. Welcome to Online Quantitative Aptitude Section in AffairsCloud.com. Here we are creating question sample in Number Series, which is common for all the competitive exams. We have included Some questions that are repeatedly asked in bank exams !!!

Directions (1-10): In these questions, a number series is given. Find out the missing number in the series.

  1. 14 21 35 57 88 ?
    A. 182
    B. 129
    C. 166
    D. 127
    E. 180
    Answer – B. 129
    Explanation :
    21 – 14 = 7
    35 – 21 = 14
    57 – 35 = 22   14 – 7 = 7; 22 – 14 = 8…..

  2. 13, 21, 37, 61, ?, 133
    A. 96
    B. 93
    C. 92
    D. 97
    E. None of these
    Answer – B. 93
    Explanation :
    21 – 13 = 8
    37 – 21 = 16
    61 – 37 = 24….

  3. 9, 10, 18, 57, ?, 1125
    A. 164
    B. 230
    C. 210
    D. 224
    E. 115
    Answer – D. 224
    Explanation :
    9 * 1 + 1 = 10
    10 * 2 – 2 = 18
    18 * 3 + 3 = 57

  4. 14, 8, 7, 11.5, 22, ?
    A. 56
    B. 59
    C. 53
    D. 58
    E. 52
    Answer – A. 56
    Explanation :
    14 * 0.5 + 1 = 8
    8 * 1 – 1 = 7
    7 * 1.5 + 1 = 11.5

  5. 13, 14, 26, 108, ? , 13712
    A. 836
    B. 896
    C. 842
    D. 856
    E. 824
    Answer – D. 856
    Explanation :
    13 * 1 + 1 = 14
    14 * 2 – 2 = 26
    26 * 4 + 4 = 108
    108 * 8 – 8 = 856
    856 * 16 + 16= 13712

  6. 12, 14, 19, 36, ?, 358
    A. 105
    B. 104
    C. 106
    D. 102
    E. 101
    Answer – E. 101
    Explanation :
    12 + 1² + 1= 14
    14 + 2² + 1= 19
    19 + 4² + 1= 36……..

  7. 4, ?, 4, 9, 32 155 
    A. 7
    B. 2
    C. 3
    D. 5
    E. 6
    Answer – C. 3
    Explanation :
    4*1 – 1 = 3
    3*2 – 2 = 4
    4*3 – 3 = 9.

  8. 34, 34, 43, 69, 134, ?
    A. 164
    B. 160
    C. 175
    D. 258
    E. 103
    Answer – D. 258
    Explanation :
    34 + 1³ – 1 = 34
    34 + 2³ + 1 = 43
    43 + 3³ – 1 = 69

  9. 12, 23, 35, 49, ?, 93
    A. 67
    B. 75
    C. 65
    D. 23
    E. 50
    Answer – A. 67
    Explanation :
    12*2 – 1 = 23
    23*2 – 11 = 35
    35*2 – 21 = 49

  10. 25, 13, 14, ?, 47, 120
    A. 19.5
    B. 17.5
    C. 22.5
    D. 23.5
    E. 15.5
    Answer – C. 22.5
    Explanation :
    25*0.5 + 0.5 = 13
    13*1 + 1 = 14
    14*1.5 + 1.5 = 22.5