Question

    Find the wrong number in the given number series 

    3, 9, 35, 159, 951, 6931

    A 159 Correct Answer Incorrect Answer
    B 3 Correct Answer Incorrect Answer
    C 951 Correct Answer Incorrect Answer
    D 6931 Correct Answer Incorrect Answer
    E none of these Correct Answer Incorrect Answer

    Solution

    ATQ, 2! + 1! = 3 3! + 3! = 9 4! + 4! = 35 5! + 5! = 159 6! + 6! = 951 7! + 7! = 6929 Therefore, 6929 should come in place of 6931.

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