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    Question

    Four number pair have been given, out of which three are

    alike in a certain way and one is different. Select the one that is different. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g., 13 - operation 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 8 - 60 Correct Answer Incorrect Answer
    B 23 - 520 Correct Answer Incorrect Answer
    C 21 - 437 Correct Answer Incorrect Answer
    D 24 - 572 Correct Answer Incorrect Answer

    Solution

    The logic followed here is: Second number = (First number)² - 4. Option 'A': 8 – 60 → 8² - 4 = 64 - 4 = 60 Option 'B': 23 – 525 → 23² - 4 = 529 - 4 = 525 Option 'C': 21 – 437 → 21² - 4 = 441 - 4 = 437 Option 'D': 24 – 572 → 24² - 4 = 576 - 4 = 572

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