general math MCQ #889

Which of the following pairs of numbers is co-prime?

general math MCQ #889

  1. Question 1

    Q1. Which of the following pairs of numbers is co-prime?

    • A) 6, 9
    • B) 7, 14
    • C) 4, 110
    • D) 9, 10

    Answer: 9, 10

    Explanation: Two numbers are co-prime if their HCF = 1. GCD(9,10) = 1 since 9 = 3² and 10 = 2×5 share no common factors.