The Fundamental Counting Principlee (Jump to: Lecture | Video )

The Fundamental Counting Principle

If an event (A) can occur a number of ways, and another event (B) can occur b number of ways, the total number of outcomes is equal to a * b.

Imagine two events:

Event A: Flip a coin. This has two outcomes - Heads and Tails.

Event B: Roll a die. This has six outcomes - 1, 2, 3, 4, 5, and 6.

According to the Fundamental Counting Principle, the total number of possible outcomes is equal to 2 * 6 = 12.

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