Question

What is the greatest common denominator of 110 40 and 120

Answer 1

The prime factorizations of the numbers are

`110 = 2* 5 * 11,\quad 40= 2^3* 5,\quad 120=2^3* 3* 5`

The greatest common factor is composed by all common primes, taken with the lowest exponent possible. In this case, it will be

`2* 5 = 10`