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    Select the number from among the given options that can replace the question mark (?) in the following series.0, 6, 20, 42, ?
    Question

    Select the number from among the given options that can replace the question mark (?) in the following series.
    0, 6, 20, 42, ?

    A.

    68

    B.

    86

    C.

    70

    D.

    72

    Correct option is D

    Given0, 6, 20, 42, ?
    Logic: Difference between the number and + 8 in number.
    6 - 0 = 6, 20 - 6 = 14, 42 - 20 = 22
    The differences are: 6, 14, 22, ?
    Each difference increases by 8:
    6 + 8 = 14, 14 + 8 = 22, 22 + 8 = 30
    So, the next difference should be 30.
    Now, adding this to the last term:
    42 + 30 = 72
    Thus, correct option is (d).

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