Math121 Discussion - 9th week - MATH 121 DISCUSSION WEEK 9...

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MATH 121 DISCUSSION WEEK 9 WORKSHEET 1) A 4-member club consisting of Al, Bo, Dee, and Fay has decided to elect two co-captains. (a) What is the sample space for all possible pairs of co-captains? (b) What is the event that Dee is one of the co-captains? (c) What is the probability that Dee is one of the co-captains? 2) Consider the set of all ordered arrangements of the letters, a, b, and c . (a) What is the sample space for all permutations of these 3 letters? (b) What is the event that a comes before c ? (c) What is the probability that b and c are next to each other? 3) There are 367 people enrolled in an Intro to Psychology class. What is the probability that at least two of them share the same birthday? 4) Suppose that you have drawn 5 cards from a standard 52-deck of cards. What is the probability that you drew five aces? 5) Suppose that you draw three cards at random from a deck of 52 cards and that you replace the deck with the card you drew each time before drawing again.
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