Question

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

    147       138        120      

    93       ?       12
    A 65 Correct Answer Incorrect Answer
    B 57 Correct Answer Incorrect Answer
    C 42 Correct Answer Incorrect Answer
    D 60 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    147 - 9 = 138 138 - 18 = 120 120 - 27 = 93 93 - 36 =  57 57 - 45 = 12

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