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    What should come in place of the question mark (?) in the given series? 61 66 72 77 83 ?
    Question

    What should come in place of the question mark (?) in the given series?
    61 66 72 77 83 ?

    A.

    87

    B.

    88

    C.

    89

    D.

    90

    Correct option is B

    Information Given:
    Series: 61, 66, 72, 77, 83, ?
    Logic: Differences follow pattern: +5, +6, +5, +6, ...
    Step-by-step:
    66 − 61 = 5
    72 − 66 = 6
    77 − 72 = 5
    83 − 77 = 6
    Next difference = 5
    83 + 5 = 88
    Final Answer:
    88
    Final Correct Option:
    (B)

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