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    Question

    Select the number from the given options that can

    replace the question mark (?) in the given series. 42, 43, 39, 48, 32, 57, 21, ?
    A 50 Correct Answer Incorrect Answer
    B 70 Correct Answer Incorrect Answer
    C 35 Correct Answer Incorrect Answer
    D 44 Correct Answer Incorrect Answer

    Solution

    natural numbers starting from 1. 42 + 1² = 42 + 1 = 43 43 - 2² = 43 - 4 = 39 39 + 3² = 39 + 9 = 48 48 - 4² = 48 - 16 = 32 32 + 5² = 32 + 25 = 57 57 - 6² = 57 - 36 = 21 21 + 7² = 21 + 49 = 70 So, 70 will replace the question mark in the given series.

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