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Subjects>Math>Basic Math

What is the least common factor of 9 and 21?

Updated: 4/28/2022

Wiki User

∙ 15y ago

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Answer: 1

The factors of 9 are 1, 3, and 9.

The factors of 21 are 1, 3, 7, and 21.

The common factors are 1 and 3; the least (smallest) common factor is 1.

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∙ 15y ago

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What is the least common factor of 18 and 21?

The factors of 18 are 1, 2, 3, 6, 9, and 18. The factors of 21 are 1, 3, 7, and 21. The common factors are 1 and 3. Therefore, the least common factor (the smallest common factor) is 1. Factorizations: 18-3x3x2 21-7x3

What is the least common factor of 4 6 9?

The least common factor is: 1

What is the Lowest common factor of 9 7?

The least common factor is: 1

What is the least common factor of 36 and 45?

The least common factor of two numbers is always one The greatest common factor of 36 and 45 is 9

What is the least common factor of 3 5 9 and 8?

The least common factor of any set of positive integers is 1.

Related questions

What is the least common factor of 9 and 4?

The least common factor of 4 and 9 is is: 1

What is the greatest common factor of 9 21 and 54?

They are 1 and 3 .Note: Those are also the least common factors of 9, 21, and 54 .

What is the least common factor of 18 and 21?

The factors of 18 are 1, 2, 3, 6, 9, and 18. The factors of 21 are 1, 3, 7, and 21. The common factors are 1 and 3. Therefore, the least common factor (the smallest common factor) is 1. Factorizations: 18-3x3x2 21-7x3

What is the least common factor of 9 36 and 64?

the least common factor and only common factor of 9, 36, and 64 is 1.

What is the greatest common factor of 9 18 and 21?

The Greatest Common Factor of 9, 18, 21: 3

What is the greatest common factor of 60 21 9?

The Greatest Common Factor of 60, 21, 9: 3

What is the least common factor of 3 7 9?

The least common factor of any set of numbers is 1.

What is the least common factor of 9 12 and 18?

The least common factor of 9, 12 and 18 is 1.

What is a least common multiple of 3 9 21?

1 but one doesn't count so it would have to be 3

What is the greatest common factor of 21 and9?

The Greatest Common Factor of 21, 9 is 3.

What is the least common factor of 4 6 9?

The least common factor is: 1

What is the common multiple of 7 and 9 and 21?

21 = 7 x 3 , 9 = 3 x 3 ; for the Least Common Multiple (LCM), 21 already is a multiple of 7. 21 & 9 have a common factor of 3, so LCM = 21 x 3 = 63

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