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    Question

    In the following number-pairs, the second number is

    obtained by applying certain mathematical operations to the first number. Which numbers should replace X and Y so that the pattern followed by the two numbers on the left side of is same as that on the right side of :: ? ( NOTE : Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13- Operations on 13 such as adding/subtracting /multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed) X : 729 :: 13 : Y
    A X=27, Y=1440 Correct Answer Incorrect Answer
    B X=11, Y=2132 Correct Answer Incorrect Answer
    C X=9, Y=1320 Correct Answer Incorrect Answer
    D X=9, Y=2197 Correct Answer Incorrect Answer

    Solution

    The correct answer is D

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