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21 and 42 have a GCF of 21.

40 and 80 have a GCF of 40.

The GCF of 21 and 40 is 1.

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Q: Which pair of numbers has a GCF of 21 40?
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Related questions

What pair of numbers has an LCM of 120 and GCF of 10?

30 and 40


Will a pair of numbers each greater than 100 always have a greater gcf than a pair of numbers that are both less than 100?

Not at all. For example: gcf(101, 102) = 1 gcf(40, 80) = 40


What is the gcf of pair 40 and 48?

The GCF is 8.


What is the GCF of the numbers 40 and 64?

The GCF is 8.


What pairs of numbers has a LCM as 40?

Which pair of numbers has an LCM of 40?


What is 21 and 40 GCF?

The GCF is 1.


What is the GCF of 40 and 21?

The GCF is 1.


What are the common factors of 21 and 40?

The GCF of 21 and 40 is 1.


What is the GCF of 80 and 200?

The GCF of these numbers is 40.


What s the gcf of 40 and 21?

The GCF is 1.


What is the gcf of 40 14 21?

The GCF is 1.


What 2 digit numbers added together make 40?

42


What is the GCF of the numbers 24 and 40?

the answer to GCF of 24 & 40 is 8


What is the GCF of numbers 50 40 and 45?

The GCF is 5.


What pair of numbers has a greatest common factor of 8 and a least common multiple of 360?

Two pairs of numbers with a GCF of 8 and an LCM of 360 are 360 and 8 and 72 and 40


What is the greatest common factor for 40 14 and 21?

The GCF of 40, 14, and 21 is 1.


What is the least common multiple of 32 and 40?

The LCM of 32 and 40 is 160. The least common multiple of a pair can be found by multiplying the numbers and dividing by their GCF. We know the GCF cannot be greater than the difference between the two numbers, which, in this case is 8. Since 8 divides into 32 and 40 evenly, we know it is the GCF. 32 * 40 / 8 = 160, so that is the LCM of 32 and 40.


What are 2 numbers that have 20 and 40 as their greatest common factor?

The GCF of 20 and 40 is 20. The GCF of 40 and 80 is 40.


What is the GFC for 21 and 40?

The GCF is 1.


What is the greatest common factor of 20 25 35 and 40?

GCF(20, 25, 35, 40) = 5 The GCF of any set of numbers is also a factor of the difference of any pair of them. So the GCF must be a factor of 5 (= 25-20). This narrows down the options quite considerably!


What is the sum of the numbers 44 and 40 as the product of their GCF?

(4 x 11) + (4 x 10) = 4 x 21 = 84


What is the GCF of the numbers 5 and 8?

The GCF of 5 and 8 is 1. The LCM is 40.


What is the GCF of the numbers 40 and 48?

8


What is the greatest common factor of 24 40 and 56?

The GCF of 24, 40, and 56 is 8The GCF is 8.


What are the the GCF of 40?

The GCF of one number is itself. To find the GCF, two or more numbers are needed.

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