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    Question

    Three of the following four number-pairs are alike in a

    certain way and thus form a group. Which is the pair that does not belong to that group? (NOTE : Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 тАФ 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.)
    A 11 - 89 Correct Answer Incorrect Answer
    B 13 тАУ 117 Correct Answer Incorrect Answer
    C 15 тАУ 135 Correct Answer Incorrect Answer
    D 18 тАУ 162 Correct Answer Incorrect Answer

    Solution

    The┬а logic is 13 x 9 = 117 15 x 9 = 135 18 x 9 = 162 11 x 9 = 99

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