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No because they are composite numbers having more than two factors

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10y ago
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1y ago

No, 9 and 20 are not co-prime numbers because they share a common factor of 1.

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Q: Are 9 and 20 co-prime numbers?
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Related questions

Are 9 and 10 coprime numbers?

9 (factors 1, 3, and 9) and 10 (factors 1, 2, 5, and 10) are coprime numbers. Numbers are coprime (also called relatively prime) if 1 is their only common factor.


When is the LCM of two numbers equal to the product of the two numbers?

When the two numbers are coprime. Coprime numbers need not be prime numbers - they must not have any factor in common (other than 1). So, for eaxmple, neither 8 nor 9 are prime numbers but they are coprime and so, LCM(8 , 9) = 72


What are a pair of numbers with a gfc of nine?

Pick any two numbers, x and y that are coprime. That is, they have no factor in common. Then GCF of 9x and 9y will be 9. Pick any two numbers, x and y that are coprime. That is, they have no factor in common. Then GCF of 9x and 9y will be 9. Pick any two numbers, x and y that are coprime. That is, they have no factor in common. Then GCF of 9x and 9y will be 9. Pick any two numbers, x and y that are coprime. That is, they have no factor in common. Then GCF of 9x and 9y will be 9.


What number goes into 9 and 14?

One. The two numbers are coprime.


When is the LCM of two number equal to their product?

When the two numbers are coprime. Coprime numbers need not be prime numbers - they must not have any factor in common (other than 1).So, for eaxmple, neither 8 nor 9 are prime numbers but they are coprime and so,LCM(8 , 9) = 72Read more: When_is_the_LCM_of_two_numbers_equal_to_the_product_of_the_two_numbers


What are the two numbers which have 1 as common factor know as?

Any two numbers whose only common factor is 1 are known as coprime. For example, 9 is coprime to 16.


What is the gcf of 9 and 125?

GCF(9, 125) = 1: the numbers are coprime.


What is a pair of numbers with a gcf of 9?

Pick any two coprime numbers. Multiply both by 9. Their GCF will be 9.


Are 6 and 8 coprime numbers?

No. If two numbers are coprime, they must have no common factors.


What is the LCM and gcf of 9 and 16?

The numbers are coprime so their LCM = 144 and their gcf = 1


Are 4 and 9 coprime numbers?

The only common factor is 1, so yes 4 and 9 are co-prime.


What is the least common denominator for 9 and 11 and 16?

Since the numbers are coprime, the answer is 9*11*16 = 1584