What is the lcm of 4 and 10?

The lowest common multiple (LCM) of 4 and 10 is 20. This means that 20 is the smallest number that is a multiple of both 4 and 10.

To find the LCM of two numbers, you can first list out the multiples of each number and find the smallest number that appears in both lists. Another way to find the LCM is to factorize the numbers and then multiply the highest power of each prime factor.

In the case of 4 and 10, the prime factors of 4 are 2 (2^2) and the prime factors of 10 are 2 and 5. To find the LCM, you would multiply the highest powers of each prime factor, which would be 2^2 * 5 = 20.

Therefore, the LCM of 4 and 10 is 20.