They are multiples of 9.
The greatest common factor is 18
There is no highest common multiple of any two or more numbers, for whatever multiple is stated, their LOWEST common multiple can be added to get an even higher common multiple. However, there is a highest common FACTOR (HCF) which is the largest positive number that divides all the numbers without a remainder, and a LOWEST common multiple (LCM) which is the smallest number into which all the numbers divide without a remainder. For 108, 54, 90: hcf(108, 54, 90) = 18 lcm(108, 54, 90) = 540
The GCF of 90 and 108 is 18.
Least Common Multiple (LCM) for 90 108 is 540
The common denominator of any two or more whole numbers, such as 108 and 90, 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.
90
The HCF of the numbers 540 and 108 is 108.
18 is the largest number that can divide into both 90 and 108 evenly.
The greatest common FACTOR of 90 and 108 is 18. The LEAST common multiple is 540. There can be no greatest common multiple since double that number will be a greater common multiple.
9
9
The greatest common factor of the numbers 60 and 108 is 12.