Question

100 students are boarding the hogwarts express! they all have allocated seats but the 1st wizard to board sits in the wrong seat. each student then gets onto the train and takes their allocated seat if it’s available. if not, they pick a seat at random. what is the chance the last passenger will get his seat how many percantage ?

Answer 1

Given:

Total students to board the Hogwarts Express = 100 students
The first student occupies the wrong seat. 
Each student occupies the allocated seat (if available) if not, he chooses a seat at random.

Determine the chance that the last passenger will get to his seat:

1/99 = 0.01 * 100 = 1.01%

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