2002 Math OSP, Number 17
Probability
Level
4
4 pairs of husbands and wifes buy tickets for 8 seats in the same row in a show. 2 people will sit next to each other only if the two are pairs of husband and wife or have the same gender. How many ways are there to put these 4 pairs of husbands and wifes onto those 8 seats?
The answer is 816.
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1 solution
This problem is identical to one in a different posting . Refer there for my solution.