My name is Professor Wilson and today I will be explaining the counting principle and how it works. The fundamental counting principle is an easier way to find out how many options or combinations you have when you have selections to choose from. So this means that when there are B ways to do one thing, and C ways to do another, then there are BxC ways of doing both. This works whether you have 5 different choices, or maybe just 2. Here is an example:
How many options of cars do you have?
a) Sedan/Hatchback 2
b) Red/Black/Blue/White/Green 5
c) Standard/Luxury/Sport 3
2 x 5 x 3 = 30
Because you have 2 style options, 5 color options, and 3 model options, there are 30 total combinations of cars that are available to you.
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