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    Question

    Which of the following is a pair of

    co-primes?
    A (217, 651) Correct Answer Incorrect Answer
    B (198, 175) Correct Answer Incorrect Answer
    C (7, 35) Correct Answer Incorrect Answer
    D (32, 62) Correct Answer Incorrect Answer

    Solution

    To determine which of the given pairs of numbers are co-prime, we must check if their greatest common divisor (GCD) is 1. Let's evaluate each pair: (198, 175) : Prime factorization of 198: 198=2├Ч32├Ч11 Prime factorization of 175: 175=52├Ч7 GCD (198, 175) = 1 (No common factors) This pair is co-prime.

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