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    Question

    If 12 times a number is subtracted from the square of

    the number and then 36 is added to the result, then the result is zero. Find the L.C.M of the number and 16.
    A 32 Correct Answer Incorrect Answer
    B 24 Correct Answer Incorrect Answer
    C 48 Correct Answer Incorrect Answer
    D 96 Correct Answer Incorrect Answer

    Solution

    Let the number be 'x' According to the question, x2 - 12x + 36 = 0 Or, x2 - 6x - 6x + 36 = 0 Or, x(x - 6) - 6(x - 6) = 0 Or, (x - 6)(x - 6) = 0 So, x = 6 L.C.M of 6 and 16 = 48

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