What is the least common multiple of 4 and 6

The common multiples of 4 and 6 are therefore the numbers 12, 24, 36, 48, … Unlike a set of common factors, this is an infinite set, the set of multiples of 12. The primenumber factorisations of 4 and 6 are 2 x 2 and 2 x 3 respectively. So the common multiples of 4 and 6 are multiples of 2 x 2 x 3, which equals 12.

Example 3: Find the GCF of 4 and 6, if their LCM is 12. Therefore, the greatest common factor of 4 and 6 is 2.