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    Which of the following numbers will replace the question mark (?) in the given series?100, 90, 81, 73, 66, 60, 55, ?
    Question

    Which of the following numbers will replace the question mark (?) in the given series?
    100, 90, 81, 73, 66, 60, 55, ?

    A.

    53

    B.

    50

    C.

    52

    D.

    51

    Correct option is D

    Given: 100, 90, 81, 73, 66, 60, 55, ?
    Logic: Difference of two constitutive number is decreasing from 10,9,8,7,6,5,4
    Explanation:
    100-10=90
    90-9=81
    81-8=73
    73-7=66
    66-6=60
    60-5=55
    Similarly,
    55-4=?
    ?=51
    Thus, Option D is the correct answer.

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