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Find the HCF of 9, 15, and 24.
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(A) 2
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(B) 6
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(C) 3
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(D) 7
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The HCF (Highest Common Factor) is the largest number that divides all the given numbers without leaving a remainder. To find the HCF of 9, 15, and 24, we can list down the factors of each number and find the common factors. The factors of 9 are 1, 3, and 9. The factors of 15 are 1, 3, 5, and 15. The factors of 24 are 1, 2, 3, 4, 6, 8, 12, and 24. The common factors are 1 and 3, but the largest common factor is 3. Therefore, the HCF of 9, 15, and 24 is 3.
