Question

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

    7      10        4         13 

          ?         16
    A 3 Correct Answer Incorrect Answer
    B 5 Correct Answer Incorrect Answer
    C 8 Correct Answer Incorrect Answer
    D 1 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    7 + 3 = 10 10 - 6 = 4 4 + 9 = 13 13 - 12 =  1 1 + 15 = 16

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