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    Question

    Find the missing number in the following number series:

    78      79       75      84     

     ?       93       57
    A 60 Correct Answer Incorrect Answer
    B 68 Correct Answer Incorrect Answer
    C 65 Correct Answer Incorrect Answer
    D 62 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    The series is: 78 + 12 = 79 79 – 22 = 75 75 + 32 = 84 84 – 42 =  68 68 + 52 = 93 93 – 62 = 57

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