A group of seven people, including Mr. and Mrs.Jones,are random in a row of seven chairs....

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A group of seven people, including Mr. and Mrs.Jones,are random in a row of seven chairs....

A group of seven people, including Mr. and Mrs.Jones,are random in a row of seven chairs. Find the probability that Mr. and Mrs. Jones are seated side by side

math Statistics-And-Probability

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Answer 1

Answer #1

There are C(7,2)=21 pairs of seats, and Mr. and Mrs.Jones are equally likely to occupy any one of those 21 pairs of seats. Six of the 21 pairs are adjacent, so the probability that they will occupy adjacent seats is 6/21=0.2857.

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Answer 2

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