Question

    What should come in place of question mark ‘?’ in the following number series?

    8      24        48       144 

          288         ?
    A 968 Correct Answer Incorrect Answer
    B 672 Correct Answer Incorrect Answer
    C 940 Correct Answer Incorrect Answer
    D 768 Correct Answer Incorrect Answer
    E 864 Correct Answer Incorrect Answer

    Solution

    8 × 3 = 24 24 × 2 = 48 48 × 3 = 144 144 × 2 = 288 288 × 3 =  864

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