To find the greatest common factor, or GCF, you must first identify the factors for each number.
For 24, its factors are 1, 2, 3, 4, 6, 8, 12, and 24.
For 108, its factors are 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, and 108.
12 is the highest (or greatest) factor they have in common, so the GCF for 24 and 108 is 12.
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The highest common factor is 8.
hcf(30, 24) = 6
6.
To find the highest common factor (HCF) of 16 and 24, we first list the factors of each number. The factors of 16 are 1, 2, 4, 8, and 16. The factors of 24 are 1, 2, 3, 4, 6, 8, 12, and 24. The highest common factor is the largest number that both lists share, which is 8. Therefore, the HCF of 16 and 24 is 8.
Factors of 15: 1 3 5 15 Factors of 24: 1 2 3 4 6 8 12 24 The highest common factor of 15 and 24 is 3