The greatest prime factor of 75 and 90 is: 5
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 prime factors of 70 are 2, 5, and 7. The prime factors of 90 are 2, 3, 3, and 5. The prime factors that 70 and 90 have in common are 2 and 5. The greatest common factor of 70 and 90 is the product of the prime factors they have in common, so it is 2 x 5 = 10.
The greatest common factor of 30, 75, and 90 is 15
The greatest common factor (GCF) of 75 and 90 is 15.
The greatest common factor of 75 and 90 is 15
90 and 75's highest common factor is 15.
The greatest common factor of the numbers 45, 75 and 90 is 15.
The GCF is 15.
The greatest common factor of 60, 75, and 90 is 15.HOPE THIS HELPS!:D:D:D:):)
The GCF is 15
If A is a factor of 90, the GCF is A. If A is a multiple of 90, the GCF is 90. If A is co-prime with 90, the GCF is 1.