Question

    Find the wrong number in the series

    3, 7, 15, 27, 63, 127,

    255
    A 7 Correct Answer Incorrect Answer
    B 15 Correct Answer Incorrect Answer
    C 27 Correct Answer Incorrect Answer
    D 63 Correct Answer Incorrect Answer

    Solution

    Go on multiplying the number by 2 and adding 1 to it to get the next number. So, 27 is wrong.

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