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SSC GD Constable 2021 · Question 102 of 377

If 5 + 8 = 14, 9 + 6 = 21, and 4 + 10 = 13, then 7 + 2 = ?

series

  1. A16
  2. B17
  3. C18
  4. D15Correct

Answer: D. 15

Explanation

The logic followed here is: Logic: First Number × 2 + Second Number - (Second Number ÷ 2) = Third Number 5 + 8 = 14 → 5 × 2 + 8 - (8 ÷ 2) = 10 + 8 - 4 = 18 - 4 = 14 9 + 6 = 21 → 9 × 2 + 6 - (6 ÷ 2) = 18 + 6 - 3 = 24 - 3 = 21 4 + 10 = 13 → 4 × 2 + 10 - (10 ÷ 2) = 8 + 10 - 5 = 18 - 5 = 13 Similarly, 7 + 2 = ? → 7 × 2 + 2 - (2 ÷ 2) = 14 + 2 - 1 = 16 - 1 = 15 Hence, ' 15 ' is the correct answer.

Source: SSC GD Constable 2021 Prev. Year Paper (2021-11-23 Shift 1) English — Prepp (with solutions) · reliable-secondary

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