It is 5.
5
A common denominator is 75.
The greatest common denominator, like the greatest common multiple, is infinite.
A common denominator, though not the least, is 1700.
A common denominator, though not the least, is 1700.
A common denominator, though not the least, is 150.
You divide both the numerator and the denominator by their greatest common factor ... exactly as you simplify any other fraction. 25 is the greatest common factor of 75 and 100 .
The greatest common denominator of any two or more whole numbers, such as 10 and 25, will always be one (1) because common denominators refers to the denominators of two or more fractions or mixed numbers, not whole numbers. So, a set of whole numbers (x,x) would have to be converted to their fraction equivalents, i.e., x/1, which will always yield a denominator of 1.
25
25 is.
The lowest common denominator of 4/25 and 3/50 is 50.
There cannot be a greatest common denominator. For suppose X were the greatest common denominator. That means X is a multiple of 60 and 25 and that X is the greatest such number. Consider 2X. If X is a multiple of 60 and 25 then 2X will certainly be a multiple of the two numbers and 2X will also be greater than X. But that contradicts the proposition that X is the greatest such number. That contradiction shows that there cannot be a GCD for 60 and 25. The argument can easily be generalised to prove that there cannot be a GCD for any set of numbers.