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    Question

    Find the wrong number in the given number series.

    63, 66, 57, 75, 51, 81
    A 66 Correct Answer Incorrect Answer
    B 81 Correct Answer Incorrect Answer
    C 51 Correct Answer Incorrect Answer
    D 75 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, 63 + (6 × 1) = 69 69 – (6 × 2) = 57 57 + (6 × 3) = 75 75 – (6 × 4) = 51 51 + (6 × 5) = 81 Therefore, 69 should come in place of 66

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