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    Question

    21, 23, 27, 35, 51,

    87  The following numbers form a series. Find the odd one out. 
    A 23 Correct Answer Incorrect Answer
    B 51 Correct Answer Incorrect Answer
    C 21 Correct Answer Incorrect Answer
    D 87 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, 21 + 21 = 23 23 + 22 = 27 27 + 23 = 35 35 + 24 = 51 51 + 25 = 83 Therefore, 83 should be in place of 87.

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