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    Question

    What will come in place of (?) in the given number series.

    121, 100, 81, 64, ?, 36
    A 49 Correct Answer Incorrect Answer
    B 31 Correct Answer Incorrect Answer
    C 73 Correct Answer Incorrect Answer
    D 77 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    All terms are perfect squares:

    121 = 11²

    100 = 10²

    81 = 9²

    64 = 8²

    ? = 7² = 49

    36 = 6²

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