Question

    Find the missing term (?) in the following number series.

    640     322      164       86     

    48      ?
    A 30 Correct Answer Incorrect Answer
    B 32 Correct Answer Incorrect Answer
    C 34 Correct Answer Incorrect Answer
    D 36 Correct Answer Incorrect Answer
    E 40 Correct Answer Incorrect Answer

    Solution

    (640 + 4) ÷ 2 = 322 (322 + 6) ÷ 2 = 164 (164 + 8) ÷ 2 = 86 (86 + 10) ÷ 2 = 48 (48 + 12) ÷ 2 =  30

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