The greatest common factor of 45 and 120 is 15 .
Hint: any number that ends in 0 or 5 has five for a factor.
So, obviously, 5 is a common of 45 and 120.
To see if 5 i s the greatest common factor, divide both of these numbers by 5 and see
what you have left. Do these remaining numbers have any common factors?
The GCF is 15.
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The greatest common factor of 120 and 245 is 5.
5
Since 45 is a factor of 270, it is automatically the GCF.
The greatest common factor of 15, 45 and 100 is 5.
The greatest common factor (GCF) is often also called the greatest common divisor (GCD) or highest common factor (HCF). Keep in mind that these different terms all refer to the same thing: the largest integer which evenly divides two or more numbers.The greatest common factor of 180 and 231 is 3