SOLUTION: Statistic: Counting and Multiplication Principle here is my problem! 1) seven shoppers arrive simultaneously at the express lane checkstand of a local supermarket. If the

Question 350275: Statistic: Counting and Multiplication Principle
here is my problem!
1) seven shoppers arrive simultaneously at the express lane checkstand of a local supermarket. If the shoppers line up at random, what's the probability they end up in the alphabetical order of their names?
2)Suppose 6 notes were written and 6 envelopes were addressed. Accidentally, the notes were inserted into the envelopes at random and then mailed. What is the probability all the notes arrive at the correct destination?
3) Four people get on a bus that makes six regular stops. Find the probability that at least two of the people get off the bus at the same stop?
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
1) 1/7!=1/5040
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