In how many ways can 10 people line up at a ticket window of a railway station?
Choose the correct answer
A) 36,28,800  B) 34,82,800  C) 33,44,800  D) 33,28,800  E) None of these
The required number of ways = number of permutations of 10 people taking all 10 at a time.   P(10, 10) = 10!   = 10 x 9 × 8 x 7 x 6 × 5 x 4 x 3 × 2 x 1   = 36,28,800   36,28,800NSWER:36,28,800
<result>A</result>
In how many ways can 10 people line up at a ticket window of a railway station?