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    Question

    Three numbers a, b and c are co-prime to each other

    such that ab = 76 and bc = 133. Find the value of (a + b + c).
    A 26 Correct Answer Incorrect Answer
    B 28 Correct Answer Incorrect Answer
    C 30 Correct Answer Incorrect Answer
    D 32 Correct Answer Incorrect Answer

    Solution

    Given, ab = 76 and bc = 133 Therefore, their H.C.F = b = 19 Therefore, a = 76/19 = 4 And, c = 133/19 = 7 Therefore, a + b + c = 4 + 19 + 7 = 30

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