Question

    What will come in place of the question mark (?) in the following series?

    31      40      51      64      79     

     ?
    A 91 Correct Answer Incorrect Answer
    B 96 Correct Answer Incorrect Answer
    C 98 Correct Answer Incorrect Answer
    D 92 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    31 + 9 = 40 40 + 11 = 51 51 + 13 = 64 64 + 15 = 79 79 + 17 = 96

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