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    Question

    In the following question, four number pairs are given.

    In each pair the number on left side of (-) is related to the number of the right side of (-) with some Logic/Rule/Relation. Three pairs are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives. (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)
    A 36 – 18 Correct Answer Incorrect Answer
    B 50 – 25 Correct Answer Incorrect Answer
    C 64 – 32 Correct Answer Incorrect Answer
    D 81 – 42 Correct Answer Incorrect Answer

    Solution

    The first number is divided by '2' to get the second number. 36 ÷ 2 = 18  50 ÷ 2 = 25 64 ÷ 2 = 32 81 ÷ 2 = 40.5 ≠ 42

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