Question:
A lock has a 3-number code made up of 20 numbers. If none of
Last updated: 8/14/2022
![A lock has a 3-number code made up of 20 numbers. If none of](https://media.kunduz.com/media/sug-question/raw/77631439-1660488991.4790225.jpeg?h=512)
A lock has a 3-number code made up of 20 numbers. If none of the numbers are allowed to repeat, how many different ways can you choose three different numbers in order for a unique code?