SOLUTION: Tom and Jerry and five other people get on a bus one at a time. How many ways can the seven get on the bus if Tom gets on the bus after Jerry
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Question 1149516: Tom and Jerry and five other people get on a bus one at a time. How many ways can the seven get on the bus if Tom gets on the bus after Jerry
Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!
The total number of different orders in which the 7 people can board the bus is 7! = 5040.
By symmetry, in exactly half of those orders Tom gets on after Jerry.
ANSWER: 2520
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