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    Which of the following numbers will replace the question mark (?) in the given series? 5, 11, 24, 51, ?
    Question

    Which of the following numbers will replace the question mark (?) in the given series?
    5, 11, 24, 51, ?

    A.

    108

    B.

    104

    C.

    102

    D.

    106

    Correct option is D

    Given: 5, 11, 24, 51. ?
    Logic: Number is getting 2 times and increased by +1, +2, +3,+4.....
    5 ×2 + 1 =11
    11× 2 +2= 22 + 2 = 24 
    Similarly,
    24× 2 + 3 = 48 + 3 = 51
    51 × 2 + 4 = 102 + 4=  106
    Thus, correct option is (d).

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