Q: Find the pairs of numbers between 15 and 30 that have 7 as their GCF?

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Two pairs of numbers with a GCF of 26 are 26 & 52 or 52 & 78

(4,8) and (8,12) both have a GCF of 4.

7 and any multiple of 7 Any multiples of 7 that differ by 7

To find a pair of numbers with a given GCF, take the GCF number and double it. The pair of numbers is the GCF, and two times the GCF. For instance, two numbers with a GCF of 3 are 3 and 6.

You need at least two numbers to find a GCF.

Related questions

You need at least two numbers to find a GCF or LCM, as they they are relationships between multiple numbers.

Two pairs of numbers with a GCF of 26 are 26 & 52 or 52 & 78

(4,8) and (8,12) both have a GCF of 4.

The gcf of 24 and 36 is 12

221 and 247 are one of many possible pairs.

Co-prime numbers

not possible, one needs two or more numbers for a gcf. Maybe there was a space between the numbers somewhere?

4 and any multiple of 4 have a GCF of 4.

The GCF of the given numbers is 8

You need at least two numbers to find a GCF. You probably have that here, but without spaces between them, we can't tell what the numbers are.

You need at least two numbers to find a GCF. You probably have that here, but without spaces between the numbers, we can't tell what they are.

7 and any multiple of 7 Any multiples of 7 that differ by 7