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Warm Up Melanie is choosing an outfit for a job interview. She has four dresses, three blouses, five pairs of pants and three pairs of shoes to choose.

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Presentation on theme: "Warm Up Melanie is choosing an outfit for a job interview. She has four dresses, three blouses, five pairs of pants and three pairs of shoes to choose."— Presentation transcript:

1 Warm Up Melanie is choosing an outfit for a job interview. She has four dresses, three blouses, five pairs of pants and three pairs of shoes to choose from. How many possible outfits can Melanie wear?

2 Today, we are going to talk about COMBINATIONS!!

3 Combinations Order does not matter
The number of combinations of r selected items from a set of n items at a time is: C = N- how many options you have R- how many you want to pick

4 Example 1 There are seven books on your summer reading list.
How many ways can you choose five books to read?

5 Example 2 A magazine company has 20 subscriptions to choose from.
In how many ways can you order 4 magazines?

6 Your Turn! Of the 20 books on your reading list, in how many ways can you choose 7 books? In how many ways can 3 pizza toppings be chosen from 12 available toppings? In how many ways can 7 students from a class of 30 be chosen for a field trip?

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