# The Principle of Inclusion Exclusion – Basic Example

Thanks to all of you who support me on Patreon. You da real mvps! 1 per month helps!! 🙂 https://www.patreon.com/patrickjmt !! Just a basic example of using the principle of inclusion – exclusion.
Note that in the previous videos I gave a general introduction, described some common notation and proved the formula. In this video, we just jump into the examples.
Part 1: https://youtu.be/4qd9JkYVGBU
Part 2: Principle of Inclusion – Exclusion Part 2 : The Proof