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Permutations and Combinations

Permutations and Combinations. CS/APMA 202 Rosen section 4.3 Aaron Bloomfield. Permutations vs. Combinations. Both are ways to count the possibilities The difference between them is whether order matters or not Consider a poker hand: A ?, 5?, 7?, 10?, K? Is that the same hand as:

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Basics of Counting

572 views • 25 slides

Permutations and Combinations

Permutations and Combinations. Alg 1 B. Factorials. What is a factorial 5! For example Try 9! 18!. Permutations vs. Combinations. Both are ways to count the possibilities The difference between them is whether order matters or not Consider a poker hand: A ?, 5?, 7?, 10?, K?

398 views • 16 slides

The Pigeonhole Principle

The Pigeonhole Principle. CS/APMA 202 Rosen section 4.2 Aaron Bloomfield. The pigeonhole principle. Suppose a flock of pigeons fly into a set of pigeonholes to roost If there are more pigeons than pigeonholes, then there must be at least 1 pigeonhole that has more than one pigeon in it

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Mood in Music

641 views • 11 slides