13.2 Notes- Probability with Permutations and Combinations

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VOCAB TO KNOW

Permutation: An arrangement of objects in which order is important.

Factorial:the product of the positive integers less than or equal to the number.

Circular Permutation:Objects are arranged in a circle or loop.

Combination:An arrangement of objects in which order is not important

FORMULAS

{X nPr Y} Permutation

{(X - 1)!} Circular Permutation

{X! / Y!N!Z!} Repeated Permutation

{X nCr Y} Combination