18 and 27
Common Multiples are multiples which are common to both numbers So Multiples of 9 are 9, 18, 27, 36 etc... Multiples of 27 are 27, 54, 81 etc... you can work out the least common multiple as 27 We can see that 9 is a factor of 27 so all multiples of 27 are a common multiple with 9. But as there is no upper limit we can not work out a greatest common multiple as they bigger they get the closer they get to infinity! You tend to work out Greatest Common Factor and Least Common Multiple with regards numbers.
The Greatest Common Factor (GCF) is: 9
The Greatest Common Factor (GCF) is: 9
The greatest common factor of 9 and 25 is 1
The greatest common factor of 9 , 8 = 1
The Greatest Common Factor of 9, 23 is 1.
The greatest common factor of 9 and 620 is 1.
The greatest common factor of 9 and 618 is 3
The Greatest Common Factor of 81, 108, 117: 9
The Greatest Common Factor of 60, 21, 9: 3
The Greatest Common Factor (GCF) is: 9
The greatest common factor of 5 and 9 is 1.