Quantitative Aptitude: Number Series Set 123

Directions: The following series follow some pattern. Find the number in each series which does not follow that pattern and is unfit in the seies.

  1. 96…, 46…, 72…, 180…, 630.., 2835..
    96
    46
    72
    180
    630
    Option B
    96 * 0.5 = 48 (not 46)
    48 * 1.5 = 72
    72 * 2.5 = 180
    180 * 3.5 = 630
    630 * 4.5 = 2835

     

  2. 42…, 86…, 348…, 2094…, 16758
    Option D

     

  3. 48.., 1764…, 1632..,. 2622…, 2530
    48
    1764
    1632
    2622
    2530
    Option E
    -12^3-12,-11^2-11…..

     

  4. 1582…, 1602…, 1634…, 1690…, 1782…, 1920
    1582
    1602
    1634
    1690
    1920
    Option E
    1582 1602 1634 1690 1782 1922
    20 32 56 92 140
    12 24 36 48

     

  5. 124…, 63…, 64…, 130…, 524…, 4200…, 67214
    124
    63
    64
    130
    67214
    Option E
    124 * 0.5 + 1 =63
    63 * 1 + 1 = 64
    64 * 2 + 2 = 130
    130 * 4 + 4 = 524
    524 * 8 + 8 = 4200
    4200 * 16 + 16 = 67216 (not 67214)

     

  6. Directions: The following series follow some pattern. Based on the same pattern find the number in place of (?) in each series.

  7. 11…, 19…, 65…, 259…, 1161…, ?
    4321
    5421
    6021
    1161
    2121
    Option C
    11 x 1 + 23 = 19
    19 x 2 + 33 = 65
    65 x 3 + 43 = 259
    259 x 4 + 53 = 1161
    1161 x 5 + 63 = 6021

     

  8. 8.., 50…, 295.., ? …, 5881…, 17641
    1471
    534
    821
    456
    1231
    Option A
    8 x 7 – 6 = 50
    50 x 6 – 5 = 295
    295 x 5 – 4 = 1471
    1471 x 4 – 3 = 5881
    5881 x 3 – 2 = 17641

     

  9. 10.., 15.., 35.., 82.5.., ?.., 562.5
    200
    205
    450
    230
    320
    Option B
    10 x 0.5 + 10 = 15
    15 x 1 + 20 = 35
    35 x 1.5 + 30 = 82.5
    82.5 x 2 + 40 = 205
    205 x 2.5 + 50 = 562.5

     

  10. 1000.., 501…, 170.., 47.5.., ?
    12.7
    14.6
    16.5
    12
    11
    Option C
    1000 ÷ 2 + 1 = 501
    501 ÷ 3 + 3 = 170
    170 ÷ 4 + 5 = 47.5
    47.5 ÷ 5 + 7 = 16.5

     

  11. 11.., 28.., 39.., 104.., ?.. , 276..
    34
    12
    75
    22
    15
    Option C
    10 + 12 = 11
    20 + 23 = 28
    30 + 32 = 39
    40 + 43 = 104
    50 + 52 = 75
    60 + 63 = 276

     

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