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    Question

    The second number in the given number pairs is obtained

    by performing certain mathematical operation(s) on the first number. The same operation(s) is/are followed in all the number-pairs except one. Find that odd number-pair.
    A 236: 1331 Correct Answer Incorrect Answer
    B 543: 1728 Correct Answer Incorrect Answer
    C 622: 1000 Correct Answer Incorrect Answer
    D 324: 625 Correct Answer Incorrect Answer

    Solution

    The logic followed here is: second number is the cube of the sum of the digits of the first number. In option 'A', first number = 236, second number = (2 + 3 + 6)³ = 1331 In option 'B', first number = 543, second number = (5 + 4 + 3)³ = 1728 In option 'C', first number = 622, second number = (6 + 2 + 2)³ = 1000 In option 'D', first number = 324, second number = (3 + 2 + 4)³ = 729 ≠ 625

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