What is the least common multiple of 20 and 13?

1 Answer
Jul 5, 2017

260260

Explanation:

When you need to find the lowest common multiple of two different numbers, in which one or both of them are prime, you can simply multiply them as long as the composite number is not a multiple of the prime.

We have 1 prime number 1313.
The number 2020 is not a multiple of 1313

We can now just multiply them:

lcm=13*20=260lcm=1320=260

The lowest common multiple is 260260