Quantitative Aptitude: Number Series Set 58 (IBPS PO 2017 Mains Based)

Shubhra

 

 

Questions 1-4 were asked in exam, 5-10 are based on it.

Directions: The following series are based on a certain pattern. One of the number in series is wrong. Find that odd one out.

  1. 9, 5, 6, 10.5, 24, 60, 183
    A) 5
    B) 6
    C) 10.5
    D) 24
    E) 60
    View Answer
      Option D
    Pattern    :
    *0.5 + 0.5, * 1+ 1, *1.5 + 1.5, *2 + 2, *2.5 + 2.5, *3 + 3
    S0, 10.5*2 + 2 = 23
  2. 55, 272, 398, 463, 491, 498, 502
    A) 272
    B) 398
    C) 463
    D) 491
    E) 498
    View Answer
      Option E
    Pattern    :
    + (63+1), + (53+1), + (43+1), + (33+1), +(23+1), + (13+1)
    So, 491 + (23+1) = 500
  3. 196, 194, 198, 190, 206, 172, 238
    A) 194
    B) 198
    C) 190
    D) 206
    E) 172
    View Answer
      Option E
    Pattern    :
    -2, +4, -8, +16, -32, +64
    So, 206 – 32 = 174
  4. 1, 2, 6, 21, 88, 450, 2676
    A) 2
    B) 6
    C) 21
    D) 88
    E) 450
    View Answer
      Option E
    Pattern    :
    *1 + 1, 82 + 2, *3 + 3, *4 + 4, *5 + 5, *6 + 6
    So, 88*5 + 5 = 445
  5. 125, 128, 122, 134, 112, 158, 62
    A) 128
    B) 122
    C) 134
    D) 112
    E) 158
    View Answer
      Option D
    Pattern    :
    +3, -6, +12, -24, +48, -96
    So, 134 – 24 = 110
  6. 4, 5, 8, 27, 102, 525, 3144
    A) 5
    B) 8
    C) 27
    D) 102
    E) 525
    View Answer
      Option D
    Pattern    :
    *1 + 1, *2 – 2, *3 + 3, *4 – 4, *5 + 5, *6 – 6
    So, 27*4 – 4 = 104
  7. 3, 7, 16, 35, 73, 133, 222
    A) 7
    B) 16
    C) 35
    D) 73
    E) 133
    View Answer
      Option C
    Pattern    :
    ……..+4…….+9…….+20…….+37…….+60…….+89…..
    .              +5……+11……..+17……..+23…….+29
    .                   +6……..+6………+6……….+6
    So, 16+30 = 36
  8. 37, 72, 96, 111, 119, 121, 122
    A) 72
    B) 96
    C) 111
    D) 119
    E) 121
    View Answer
      Option E
    Pattern    :
    + (62-1), + (52-1), + (42-1), + (32-1), +(22-1), + (12-1)
    So, 119 +(22-1) = 122
  9. 21, 10, 9, 14, 22, 52.5, 154.5
    A) 10
    B) 9
    C) 14
    D) 22
    E) 52.5
    View Answer
      Option C
    Pattern    :
    *0.5 – 0.5, *1 – 1, *1.5 – 1.5, *2 – 2, *2.5 – 2.5, *3 – 3
    So, 9*1.5 – 1.5 = 12
  10. 45, 46, 54, 81, 145, 174, 206
    A) 46
    B) 54
    C) 81
    D) 145
    E) 174
    View Answer
      Option E
    Pattern    :
    +12, +23, +32, +43, +52, +63
    So, 145+52  = 170

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3 Thoughts to “Quantitative Aptitude: Number Series Set 58 (IBPS PO 2017 Mains Based)”

  1. Nishu
    December 6, 2017 at 9:12 pm

    check Q5

    Reply
    1. Shubhra
      December 6, 2017 at 10:09 pm

      Whats the error ?

      Reply
      1. Nishu
        December 6, 2017 at 10:22 pm

        Oh nothing wrong, I forgot for a moment that these are wrong number series 🙂

        Reply

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