Consecutive seats
Probability
Level
2
In how many ways can 5 men be assigned consecutive seats in a row of 15 seats?
The answer is 1320.
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1 solution
There are 5! = 120 ways to seat 5 men in a row.
The first man can sit on the 1st, 2nd, 3rd, ... , 11th seat. (11 ways)
Hence, the correct answer should be:
1 2 0 × 1 1 = 1 3 2 0