G

Gaurav Lamba • 2.83K Points
Extraordinary Reasoning

  • (A) 14, 13
  • (B) 18, 21
  • (C) 14, 17
  • (D) 18, 17
Correct Answer - Option(D)

Explanation by: Gaurav Lamba
This is a simple alternating addition and subtraction series. First, 3 is added, then 1 is subtracted, then 3 is added, 1 subtracted, and so on. 

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