The GCF is 1.
The GCF is 3.
The GCF is 3.
The GCF is 1.
The GCF is 3.
The GCF is 1.
Expressing each number as a product of prime numbers can help a lot. Prime factorization of 36 = 2x2x3x3......(1) Prime factorization of 15 = 3x5......(2) From 1 and 2 it is clear that 3 is the only number which divides both 36 and 15. So, greatest common factor = 3.
It is 3
The Greatest Common Factor (GCF) of 81, 36, and 9 is 9.
The answer is 3.
The GCF is 3.