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    Which of the following numbers will replace the question mark (?) in the given series? 17, 23, 27, 29, ?
    Question

    Which of the following numbers will replace the question mark (?) in the given series?
    17, 23, 27, 29, ?

    A.

    31

    B.

    30

    C.

    29

    D.

    25

    Correct option is C

    Given: 17, 23, 27, 29, ?
    Logic: The differences are6, 4, 2, which decrease by2each time.​
    The differences between consecutive numbers:
    23 - 17 = 6
    27 - 23 = 4
    29 - 27 = 2
    The next difference should be (since the pattern decreases by 2).
    29 + 0 = 29
    Now, the next number will be: 29.
    Thus, the correct option is  (C) 29.

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