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Number Series - Geometric Progression

CMAT 2019 · Logical Reasoning · Easy · Number Series

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The missing term in the series 2,1,1/2,1/4,…2, 1, 1/2, 1/4, \dots is:

  1. A.

    1/3

  2. B.

    1/8

  3. C.

    2/8

  4. D.

    1/16

Answer

B

Explanation

Each term is divided by 2 (or multiplied by 1/21/2):

  • 2×1/2=12 \times 1/2 = 1
  • 1×1/2=1/21 \times 1/2 = 1/2
  • 1/2×1/2=1/41/2 \times 1/2 = 1/4
  • 1/4×1/2=1/81/4 \times 1/2 = 1/8

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