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    Question

    Which of the following is the greatest number that

    divides 72 and 119 and leaves 3 and 4 as respective remainders?
    A 23 Correct Answer Incorrect Answer
    B 21 Correct Answer Incorrect Answer
    C 19 Correct Answer Incorrect Answer
    D 17 Correct Answer Incorrect Answer

    Solution

    To find the greatest number that divides 72 and 119 and leaves remainders 3 and 4, respectively, follow these steps: Adjust the numbers by subtracting the remainders: 72 - 3 = 69 119 - 4 = 115 Find the greatest common divisor (GCD) of 69 and 115. Use the Euclidean algorithm: 115├╖69=1┬а(quotient),115тИТ69=46 69├╖46=1┬а(quotient),69тИТ46=23 46├╖23=2┬а(quotient),46тИТ46=0 The GCD is 23. Thus, the greatest number that divides both 72 and 119, leaving remainders 3 and 4, respectively, is 23.

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