Question

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

    13      13        26         ? 

          832         13312
    A 140 Correct Answer Incorrect Answer
    B 104 Correct Answer Incorrect Answer
    C 120 Correct Answer Incorrect Answer
    D 100 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    13 × 1 = 13 13 × 2 = 26 26 × 4 =  104 104 × 8 = 832 832 × 16 = 13312

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