You can put this solution on YOUR website! In how many ways may 6 students be seated in a row of 9 seats?
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Pick 6 seats in 9C6 = 84 ways.
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Arrange the 6 students in the 6 seats selected: 6! ways.
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Answer to the question as stated: 84*6! = 60,480
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Cheers,
Stan H.