Hello, ghostb!

There is a bus with 6 people, and the bus will stop 10 times.

All passengers are equally likely to get off anywhere.

What is the probability that no two people get off at the same stop?

The 1st person has 10 choices of stops: .

The 2nd person has 9 choices of stops: .

The 3rd person has 8 choices of stops: .

The 4th person has 7 choices of stops: .

The 5th person has 6 choices of stops: .

The 6th person has 5 choices of stops: .

Therefore: .