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

     

  6. Directions(6-10): Find the wrong number of the following series.

  7. 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.

     

  8. 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.

     

  9. 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.

     

  10. 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.

     

  11. 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.

     


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