Quantitative Aptitude: Number Series Set 4

Directions: The following series are based on a specific pattern. In these series one number is wrong, find that odd one

  1. 5, 9, 18, 38, 55, 85, 124
    A) 18
    B) 38
    C) 9
    D) 85
    E) 55
    View Answer
    Option B
    Pattern:

    23 – 12, 33 – 22, 43 – 32, 53 – 42, ….
  2. 9, 26, 65, 124, 217, 338, 513
    A) 124
    B) 65
    C) 338
    D) 26
    E) 217
    View Answer
    Option C
    Pattern:

    23 + 1, 33 – 1, 43 + 1, 53 – 1, 63 + 1, 73 – 1,
  3. 9, 18, 40, 83, 170, 345, 696
    A) 18
    B) 345
    C) 40
    D) 83
    E) 170
    View Answer
    Option A
    Pattern:

    ×2 + 1, ×2 + 2, ×2 + 3, ×2 + 4, ×2 + 5, ×2 + 6,
  4. 512, 266, 132, 70, 40, 26, 20
    A) 40
    B) 26
    C) 132
    D) 266
    E) 70
    View Answer
    Option D
    Pattern:

    ÷2 + 2, ÷2 + 3, ÷2 + 4, ÷2 + 5, ÷2 + 6,
  5. 8, 29, 82, 241, 748, 2249, 6742
    A) 2249
    B) 82
    C) 29
    D) 748
    E) 241
    View Answer
    Option E
    Pattern:

    ×3 + 5, ×3 – 5, ×3 + 5, ×3 – 5, ×3 + 5, ×3 – 5,..
  6. 123, 126, 120, 144, 63, 306
    A) 126
    B) 63
    C) 144
    D) 120
    E) 306
    View Answer
    Option C
    Pattern:

    + 3, – 32, + 33, – 34
  7. 5, 6, 14, 27, 87, 112, 328
    A) 96
    B) 287
    C) 6
    D) 112
    E) 14
    View Answer
    Option B
    Pattern:

    + 12, + 23, + 32, + 43, + 52, + 63
  8. 11, 31, 9, 38, 7, 35, 5
    A) 31
    B) 7
    C) 9
    D) 38
    E) 35
    View Answer
    Option D
    Pattern:

    +20, -22, +24, -26, +28, -30
  9. 18, 30, 14, 34, 10, 40, 6
    A) 34
    B) 30
    C) 14
    D) 10
    E) 40
    View Answer
    Option E
    Pattern:

    +12, -16, +20, -24, +28, -32
  10. 8, 10, 6, 15, 52.5, 236.25
    A) 52.5
    B) 15
    C) 10
    D) 6
    E) 236.25
    View Answer
    Option C
    Pattern:

    × 0.5, × 1.5, × 2.5, × 3.5, ×4.5

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11 Thoughts to “Quantitative Aptitude: Number Series Set 4”

  1. ^^^Jaga^^^....

    q6????

  2. NEHA *** Jhansi ki RANI ***

    mam 1 no. ka logic samaj me nhi aya..

    1. It is (cubes of no) – (squares of previous no)

  3. sachin shukla@ my turn 2017

    ty..

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