1 is the greatest common factor of 8 and 15 .
GCF stand for greatest common factor.It is a set of numbers is the largest factor that each and all the number share. GCF is also often used to find the common denominator.
First we need to write common factor of each number.
The common factors of 8 = ( 1,2,4,8)
The common factor of 15= (1,3,5,15)
1 is the only one common factor here which is divides both 8 and 15.
So 1 is the only and GCF of 8 and 15.
Thus, 1 is the right answer.
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