1)Given an ordinary deck of cards, what is the probability that a single card dr
ID: 2933031 • Letter: 1
Question
1)Given an ordinary deck of cards, what is the probability that a single card drawn will be a red queen, a jack, or an king? Give your answer as a decimal rounded to the hundredths place. Example: (0.35)
2) How many ways can 4 DVDs be selected for playing if they are to be chosen from 10 different DVDs? Order is not important.
3) Library patrons in a large metropolitan area were questioned about extending library hours. 71.6% of those polled agreed with extending hours. If five library patrons from this area were chosen at random, what is that probability that all five would agree to extended hours? Give your answer as a decimal (rounded to the thousandths place)
Explanation / Answer
1) P(red queen, a jack or a king) = P(red queen) + P(jack) + P(king)
= 2/52 + 4/52 + 4/52
= 0.19
2) number of ways =10C4 = 10! / (4! * 6!) = 210
3) P(all five agreed) = 0.7165 = 0.188
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