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Student Chair Ticket Swap

1800SpecialistPermutationsCombinatoricsCounting Principles

Qualifying Round

Each of 12 students has a ticket to one of 12 chairs in a row at a theater. How many ways are there to seat the students so that each student sits either in the chair specified on his/her ticket or in one to the left or to the right of the specified chair? (a) 233 (b) 225 (c) 187 (d) 252
0 students attempted0% solvedRating 1800

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