Math121 Discussion - 10th week

Math121 Discussion - 10th week - MATH 121 DISCUSSION WEEK...

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Unformatted text preview: MATH 121 DISCUSSION WEEK 10 WORKSHEET 1) Suppose that there are three separate piles of eight Uno cards numbered 1 through 8 and you draw a card at random from each pile. (a) What is the probability that you draw an even number from the first pile, an odd number from the second pile, and a number less than 3 from the third pile? (b) What is the probability that you draw the same number from each pile? (c) What is the probability that you do not draw 3 cards that are all the same number? 2) Assume that in a group of 4 friends, none of them had a birthday which fell on a leap year. (a) What is the probability that all 4 have the same birthday? (b) What is the probability that they all have different birthdays? (c) What is the probability that at least two share the same birthday? 3) Suppose that you have eight pairs of socks in your drawer: 3 white pairs, 2 blue pairs, 2 black pairs, and 1 yellow pair. (a) Suppose you pick two pairs at random, and the first pair is the color white. What is the probability that you pick a blue pair for the second pair given the first pick? (b) Suppose you pick two pairs at random, and the first pair is the color yellow. What is the probability that you pick a white pair for the second pair given the first pick? (c) Suppose you pick two pairs at random, and the first pair is the color blue. What is the probability that you pick another blue pair for the second pick? (d) Suppose you pick two pairs at random. What is the probability that you pick a black pair and a yellow pair? (e) Suppose you pick two pairs at random. What is the probability that you pick two black pairs?...
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Math121 Discussion - 10th week - MATH 121 DISCUSSION WEEK...

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