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Both are primes, so their gcf is 1.
But..
If you're using the stupid SwitchedOn Online Integrated Math course, they say it's 3.
I couldn't tell you why, but I put 1, knowing they're both prime (and 1 goes into both), and they said it was wrong.
So. Yay for idiot mathing :)
The GCF of 3 and 5 is 1. To help you understand this, here are the factors of each.
3 5
1x3 1x5
1 is the greatest factor that is common out of both of them.
What else can I help you with?
What is the GCF of 5 and 3?
GCF of 5 and 3 is 1.
What is the GCF for these numbers 3 and 5?
The GCF is 1.
What is the gcf of 75 and 285?
75 = 3 * 5 * 5 and 285 = 3 * 5 * 19 they have in common ( 3 * 5) So the GCF is 15.
What is the gcf of -3 5?
The GCF is 1.
What is the gcf of 3 5 7?
3 = 1 x 3 5 = 1 x 5 7 = 1 x 7 GCF = 1
What is the GCF of 5 and 8 and 3 and 2 and 12?
The GCF is 1.
What is the GCF of 3 5 and 12?
The GCF is 1.
What is the GCF of 3 and 7and 5?
The GCF is 1.
What is the gcf of 2 3 4 5 and 7?
The GCF is 1.
What is the GCF or 125 80 and 225?
GCF (125, 80, 225) = 5
What is the greatest common factor of 90 and 210?
The systematic way to get the answer is: 90 = 2*3*3*5 210 = 2*3*5*7 So gcf is 2*3*5 = 30
What is the greatest common factor of 4312 and 3388?
You need at least two numbers to find a GCF. If that's 3 and 15, the GCF is 3.
