Quantitative Aptitude: Number Series Set 124

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

    42
    86
    348
    2094
    16758
    Option E
    42 * 2 + 2 = 86

    86 * 4 + 4 = 348

    348 * 6 + 6 = 2094

    2094 * 8 + 8 =16760 (16758)

     

  3. 48…, 1764…, 1632.., 2622…, 2530

    48
    1764
    1632
    2622
    2530
    Option E
    48 1764 1632 2622 2532
    +12^3-12 -11^2-11 +10^3-10 -9^2-9

     

  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

    63
    64
    130
    524
    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. 7512.., 3756…, 1252…, ?… , 62.6
    231
    313
    455
    320
    334
    Option B
    The pattern is, ÷ 2, ÷ 3, ÷ 4, ÷ 5,….
    The answer is, 313

     

  8. 36…, 32…, 73…, 203…, 837…, ?..
    3210
    4149
    4500
    4677
    4433
    Option B
    The pattern is, *1 – 22, *2 + 32, *3 – 42, *4 + 52, *5 – 62,….
    The answer is, 4149

     

  9. 3278…, 5384…, 6086…, 6320…, ?… , 6424
    5678
    6740
    6398
    5566
    6889
    Option C
    3278 5384 6086 6320 6398 6424
    2106 702 234 78 26
    The difference is, ÷ 3
    The answer is, 6398

     

  10. 819…, 818…, 408…, 135…, ?..
    31
    31.5
    32
    32.75
    33
    Option D
    The pattern is,
    (819 – 1)/1 = 818
    (818 – 2)/2 = 408
    (408 – 3)/3 = 135
    (135 – 4)/4 = 32.75
    The answer is, 32.75

     

  11. 1276…, 1280…, 1296…, 1360…, ?… , 2640
    1212
    1313
    1414
    1515
    1616
    Option E
    The pattern is, +4^1, +4^2, +4^3, +4^4,….
    The answer is, 1616

     

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