Unit 4 Section 4-6. 4-6: Probability and Counting Rules  Counting rules can be combined with probability rules to solve many types of probability problems.

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Presentation transcript:

Unit 4 Section 4-6

4-6: Probability and Counting Rules  Counting rules can be combined with probability rules to solve many types of probability problems.

 Example 1: Find the probabilities of getting 4 aces when 5 cards are drawn from an ordinary deck of cards. Section 4-6

 Example 2: A box contains 24 transistors, four of which are defective. If 4 are sold at random, find the following probabilities: a)Exactly 2 are defective b)None are defective c)All are defective d)At least 1 is defective Section 4-6

 Example 3: A store has 6 TV Guide magazines and 8 Newstime magazines on the counter. If two customers purchased a magazine, find the probability that one of each magazine was purchased. Section 4-6

 Example 4: A combination lock consists of the 26 letters of the alphabet. If a 3-letter combination is needed, find the probability that the combinations will consist of the letters ABC in that order. The same letter can be used more than once. Section 4-6

 Example 5: There are 8 married couples in a tennis club. If 1 man and 1 woman are selected at random to plan the summer tournament, find the probability that they are married to each other. Section 4-6

Homework:  Pg 227: 4-10 Section 4-6