Question

    Which of the following pairs is NOT

    coprime?
    A (17, 34) Correct Answer Incorrect Answer
    B (11, 13) Correct Answer Incorrect Answer
    C (15, 17) Correct Answer Incorrect Answer
    D (17, 23) Correct Answer Incorrect Answer

    Solution

    ATQ,

    Two numbers are coprime if their greatest common divisor (GCD) is 1, i.e., they have no common factors other than 1. Check each pair: (17, 34) → GCD = 17 ❌ Not coprime (11, 13) → GCD = 1 ✅ (15, 17) → GCD = 1 ✅ (17, 23) → GCD = 1 ✅

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