Quantitative Aptitude: Number Series Set 116

Find what comes in the question mark.

  1. 0.8.. 3.8.. 12.6.. 44.8..?
    188.2
    180.2
    88.2
    198.2
    168.2
    Option A
    0.8 × 1 + 3 = 3.8
    3.8 × 2 + 5 = 12.6
    12.6 × 3 + 7 = 44.8
    44.8 × 4 + 9 = 188.2

     

  2. 33 .. 110.. 453.. 2282.. ?
    13711
    12467
    12345
    13423
    15672
    Option A
    13 × 2 + 7 = 33
    33 × 3 + 11 = 110
    110 × 4 + 13 = 453
    453 × 5 + 17 = 2282
    2282 × 6 + 19 = 13711

     

  3. 664.. 334.. 85.5.. ?.. 4.03125 ..
    16
    15
    25.25
    16.25
    15.25
    Option D
    664 + 4 ÷ 2 = 334
    334 + 8 ÷ 4 = 85.5
    85.5 + 12 ÷ 6 = 16.25
    16.25 + 16 ÷ 8 = 4.03125

     

  4. 1 .. 3.. 7.. 13.. 22.. ? ..
    30
    34
    21
    31
    33
    Option
    1 + 1 + 1 = 3
    3 + 2 + 2 = 7
    7 + 3 + 3 = 13
    13 + 4 + 5 = 22
    22 + 5 + 7 = 34

     

  5. 5 .. 41.. 321.. 1921.. ?..
    7681
    Option
    5 × 10 – 9 = 41
    41 × 8 – 7 = 321
    321 × 6 – 5 = 1921
    1921 × 4 – 3 = 7681

     

  6. 384.. 381.. 372.. 345.. ?
    100
    101
    102
    103
    104
    Option C
    -3, -9, -27 ,-81 -243, ….

     

  7. 12.. 14.. 32.. 102 ..?..
    Option
    clue: ×1 + 2, ×2 + 4, ×3 + 6, ×4 + 8, ×5 + 10

     

  8. 841.. 961… 1089.. ?.. 1369 ..
    1225
    1125
    1325
    1432
    1200
    Option A
    clue: +120, +128, +136, +…. +160, ….

     

  9. 1108.. 1117.. 1142.. 1191 .. ?..
    Option
    clue: +3^2, +5^2, +7^2, +11^2, +13^2,….

     

  10. 529.. 841.. 961.. ? .. 1681
    1432
    1345
    1234
    1369
    1145
    Option
    clue:square of prime numbers from 23

     

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