6th Grade Comprehensive Topics of Counting: Problem 4

Problem: There are 20 identical cubes in a container. Every time Anna takes cubes from the container, she can either take 1, 2, 3, or 4 at once, but has to make sure that the number of cubes left over in the container after each take is not a multiple of 3 or 4. How many different ways can you take cubes from the container until you have 0 left?

Key: Enumerate

Please consider subscribing, here's our website: https://inquisitivekids.github.io