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    What should come in place of the question mark (?) in the given series? 20, 10, 40, 20, 80, ? ​
    Question

    What should come in place of the question mark (?) in the given series?
    20, 10, 40, 20, 80, ? ​

    A.

    40

    B.

    60

    C.

    70

    D.

    50

    Correct option is A

    Information Given:
    Series: 20, 10, 40, 20, 80, ?
    Logic: Pattern alternates: ÷2, ×4
    Explanation:
    20 ÷ 2 = 10
    10 × 4 = 40
    40 ÷ 2 = 20
    20 × 4 = 80
    80 ÷ 2 = 40
    Final Answer:
    40
    Final Correct Option:
    (a)

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