Question 1041896
Let's say you have 3 different color shirts (red, green, blue) and 6 different types of pants (jeans, khakis, etc)


This would mean that there are 3*6 = 18 different outfits. One example of an outfit is you wear a blue shirt and jeans for pants. 


The counting principle is simply multiplying out the different options. This can be shown by drawing out a probability tree. If you did that, then there would be 2 levels and 18 different branches showing out all the different possibilities.