What is the lcm of 8 and 20?

The least common multiple (LCM) of 8 and 20 is the smallest number that is a multiple of both 8 and 20.

To find the LCM of 8 and 20, we first need to find the prime factorization of each number:

• The prime factorization of 8 is 2 x 2 x 2 = 2^3
• The prime factorization of 20 is 2 x 2 x 5 = 2^2 x 5

Next, we take the highest power of each prime factor that appears in either number: 2^3 x 5 = 40

Therefore, the LCM of 8 and 20 is 40.