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    Question

    Find the smallest number that should be multiplied to

    540 so that it becomes a perfect square.
    A 5 Correct Answer Incorrect Answer
    B 6 Correct Answer Incorrect Answer
    C 3 Correct Answer Incorrect Answer
    D 15 Correct Answer Incorrect Answer

    Solution

    540  =  2 2  ×  3 3  ×  5

    Since, the powers of 3 and 5 are odd, we need to multiply the given number by 3 × 5 once to make it a perfect square.

    Required number = 15

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