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    Question

    Four number-pairs have been given, out of which three

    are alike in some manner and one is different. Select the number-pair that is different.
    A 54 - 11 Correct Answer Incorrect Answer
    B 63 - 9 Correct Answer Incorrect Answer
    C 93 - 15 Correct Answer Incorrect Answer
    D 73 – 16 Correct Answer Incorrect Answer

    Solution

    1) 54 - 11, = (5 X 4) - (5 + 4) = 20 – 9 = 11 2) 63 - 9, = (6 X 3) - (6 + 3) = 18 - 9 = 9 3) 93 – 15 = (9 X 3) - (9 + 3) = 27 - 12 = 15 4) 73 – 16= (7 X 3) - (7 + 3) = 21 - 10 = 11

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