Respuesta :

the answer would be 1,7 because 7 is a prime number

Answer:

Some of the possible pairs are,

(7, 14), (21, 28), (28, 35), (42, 49), (63, 70).

Step-by-step explanation:

If two numbers have GCF( greatest common factor ) 7,

Then there are no common factor of these numbers other than 7,

∵ Multiples of 7 are,

7, 14, 21, 28, 35, 42, 49, 63, 70, .... so on,,,

Thus, some pairs which have GCF 7 are,

(7, 14), (21, 28), (28, 35), (42, 49), (63, 70).

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