Quantitative Aptitude: Number Series Set 60 (IBPS Clerk 2017 Prelims)

Number Series asked IBPS Clerk Prelims 9 December 2017

These Number Series questions are asked in IBPS Clerk Prelims – Shift 1. 

Directions: The series are based on a certain patter. Following the same pattern, find the number represented by ? in the following series.

  1. 346, 345, 337, 310, 246, ?
    A) 135

    B) 117
    C) 121
    D) 102
    E) 146
    View Answer
      Option C
    Pattern
    :
    …-1…..-8…..-27…..-64……-125
  2. 7.5, 9, 13.5, 27, 67.5, ?
    A) 149

    B) 197
    C) 165
    D) 138
    E) 189
    View Answer
      Option E
    Pattern
    :
    7.5 + 1.5 = 9
    9 + 4.5 = 13.5
    13.5 + 13.5 = 27
    27 + 40.5 = 67.5
    67.5 + 121.5 = 189
  3. 4, 2.5, 3.5, 9, 40, ?
    A) 316

    B) 328
    C) 288
    D) 314
    E) 386
    View Answer
      Option B
    Pattern
    :
    *0.5 + 0.5, *1 + 1, *2 + 2, *4 + 4, *8 + 8
  4. 4.5, 3.5, 6, 17, 67, ?
    A) 263

    B) 334
    C) 254
    D) 354
    E) 318
    View Answer
      Option B
    Pattern
    :
    *1 – 1, *2 – 1, *3 – 1, *4 – 1, *5 – 1
  5. 159, 79, 39, 19, ?, 4
    A) 11

    B) 12
    C) 8
    D) 9
    E) 7
    View Answer
      Option D
    Pattern
    :
    *0.5 – 0.5, *0.5 – 0.5, *0.5 – 0.5, *0.5 – 0.5,*0.5 – 0.5

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