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Prime factorization of 48 = 2 x 2 x 2 x 2 x 3
Prime factorization of 18 = 2 x 3 x 3
From the factorization of both numbers it is clear that 1, 2, 3 and 2x3 are common divisors. But 2x3 = 6 is the greatest among these, so GCD(48,18) = 6.
Wiki User
∙ 11y ago
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∙ 6y ago18 is a factor of 72 so 18 is the greatest common factor of 18 and 72.
Here are the multiples:
72 =1 x 72 = 2 x 36 = 3 x 24 = 4 x 18 = 6 x 12 = 8 x 9
18 = 1 x 18 = 2 x 9 = 3 x 6
Wiki User
∙ 13y agoThe Greatest Common Divisor of 72, 18 is 18.
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∙ 8y agoSince 18 is a factor of 72, it is automatically the GCF.
Wiki User
∙ 11y ago18 = 2 x 3 x 3 42 = 2 x 3 x 7 Therefore the greatest common factor of these numbers is 2 x 3 = 6.
Wiki User
∙ 7y agoThe GCF is 6.
Wiki User
∙ 7y agoThe GCF is 6.
Wiki User
∙ 8y agoThe GCF is 9.
Wiki User
∙ 14y ago18
Wiki User
∙ 6y agoIt is 18
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What is the greatest common divisor of 18-45-72?
nine
What is a greatest common divisor of 18 45 72?
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What is the greatest common divisor of 72?
You must have at least two numbers from which to derive a common divisor!
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What is the greatest common factor of 144 and 216?
By GCF you mean Greatest Common Divisor = 72
