Question

find the HCF Of the following number by prime factorization 72, 90
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Answer 1

Answer:

18.

Step-by-step explanation:

1. Prime factorization of 72: 2×2×2×3×3.

2. Prime factorization of 90: 2×3×3×5.

3. The prime factors and multiciplities 72 and 90 have in common are: 2×2×3.

4. 2×3×3 is the gcf of 72 and 90.

5. GCF (72,90) = 18.

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Answer 2

Answer:

18.

Step-by-step explanation:

1. Prime factorization of 72: 2×2×2×3×3.

2. Prime factorization of 90: 2×3×3×5.

3. The prime factors and multiciplities 72 and 90 have in common are: 2×2×3.

4. 2×2×3 is the GCF of 72 and 90.

5. GCF (72,90) = 18.

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