That would be 15. Only a number ending in five would be a factor of 75. 45 is not. 35 is not. 25 is not. 15 is, and it also is a factor of 90. This makes it the highest common factor of 75 and 90, although it is not a prime factor.
The Greatest Common Factor (GCF) is: 15
It is 30 because it's the highest common factor of 60 and 90
The highest common factor is 15
7The highest common factor is 7
90
6
30
10
9
The Greatest Common Factor (GCF) is: 9
95 and 90's highest common factor is five.
That would be 15. Only a number ending in five would be a factor of 75. 45 is not. 35 is not. 25 is not. 15 is, and it also is a factor of 90. This makes it the highest common factor of 75 and 90, although it is not a prime factor.
hcf(6, 90) = 6.
The GCF of 60 and 90 is 30.
90 and 12's highest common factor is six.
Five