A postman has to deliver five letters to five different houses in a street. Unfortunately, the rain has erased the addresses, so he just distributes them randomly, one letter per house. What is the probability that every house gets the right letter? What is the probability that every house gets a wrong letter?
A postman has to deliver five letters to five different houses in a street. Unfortunately, the rain has erased the addresses, so he just distributes them randomly, one letter per house. What is the probability that every house gets the right letter? What is the probability that every house gets a wrong letter?
Chapter8: Sequences, Series,and Probability
Section8.6: Counting Principles
Problem 74E: Lottery Powerball is a lottery game that is operated by the Multi-State Lottery Association and is...
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Transcribed Image Text:A postman has to deliver five letters to five different houses in
a street. Unfortunately, the rain has erased the addresses, so he just
distributes them randomly, one letter per house. What is the
probability that every house gets the right letter? What is the
probability that every house gets a wrong letter?
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