That cannot be determined.
The GCF of 1, 2 and 87 is 1.
The GCF of 15, 30 and 45 is 15.
The GCF of 90, 180 and 270 is 90 on the chance that that is what you meant to ask.
15 and 18
the answer is 45 90 and 60
45, 90 and 135
3 x 30 = 90
The GCF of 90 150 and 120 is 30. This leaves you with 3, 5 and 4. There are no further common factors between the 3 remaining numbers.
The GCF is 3.
The GCF is 3.
There are infinitely many such pairs of numbers. As long as the only primes they have in common are 2×3²×5 (the prime factorization of 90) their gcf will be 90: Some examples: 90, 180 90, 270 90, 360 180, 270 180, 450 450, 630 630, 990
You need at least two numbers to find a GCF. If that's 42, 90 and 81, the GCF is 3.
-117
The GCF is 3.
The GCF is 3.