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    Question

    In each of the following series, one term is missing.

    Find the missing term. 2, 6, 15, 31, 56, ?
    A 65 Correct Answer Incorrect Answer
    B 31 Correct Answer Incorrect Answer
    C 92 Correct Answer Incorrect Answer
    D 115 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Differences: 6 − 2 = 4 15 − 6 = 9 31 − 15 = 16 56 − 31 = 25 Differences: 4, 9, 16, 25 = 2², 3², 4², 5² Next difference = 6² = 36 Missing term = 56 + 36 = 92

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