What is the lcm of 3 and 6?

The least common multiple (LCM) of two numbers is the smallest number that is a multiple of both numbers. In this case, the LCM of 3 and 6 is 6, because 6 is the smallest number that is a multiple of both 3 and 6.

To find the LCM of two numbers, you can list the multiples of each number and then find the smallest number that appears in both lists. Another method is to find the prime factorization of each number and then multiply together the highest power of each prime factor that appears in either factorization. In the case of 3 and 6, the prime factorization of 3 is 3 and the prime factorization of 6 is 2 * 3. The LCM is therefore 2 * 3 = 6.