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    Which of the following numbers will replace the question mark (?) in the given series? 52, 69, 86, 103, ?, 137
    Question

    Which of the following numbers will replace the question mark (?) in the given series?
    52, 69, 86, 103, ?, 137

    A.

    112

    B.

    120

    C.

    123

    D.

    109

    Correct option is B

    Given: 52, 69, 86, 103, ?, 137
    Logic: Series is increasing as 17 each time.
    The difference between consecutive terms is:
    69−52=17
    86−69=17
    103−86=17
    So, the pattern shows that each number increases by 17.
    Next, calculate the missing term:
    103+17=120
    Finally, verify the pattern:
    137−120=17 (which fits the pattern)
    So, number that will replace the question mark is 120.
    Correct answer is (b) 120.

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