Practice Test Discussion

Q)

In series 1, only one number is wrong. If the wrong number is corrected, the series gets established following a certain logic. Complete series 2 with same logic and answer the given question.

Series 1: 15 9 8 12 36 170
Series 2: 19 a b c d e

What will come in place of (b) ?


  • Explanation

    Given number series 1 follows the logic

    ⇒ 15×1-1×6=15-6=9

    ⇒ 9×2-2×5=18-10=8

    ⇒ 8×3-3×4=24-12=12

    ⇒ 12×4-4×3=48-12=36

    ⇒ 36×5-5×2=180-10=170

    Similarly, series 2

    (a)⇒ 19×1-1×6=19-6=13

    (b)⇒ 13×2-2×5=26-10=16

    Hence, Option B is correct.

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