A train going from Delhi to Jaipur stops at 7 intermediate stations. Five persons enter the train during the journey with five different tickets of the same class. How many different sets of tickets they could have?

According to questions, there r 7 intermediate stations, this means they can have 8 different kind of tickets.

Note: J,1,2,3,..7,D are the stations

D->1, D->2,D->3,D->4...D->7,D->J

Then if the passengers have the tickets of the same class can may be of same stations, no of tickets possible are 8⁵

However if they have tickets of different stations of same coach the permutations are 8*7*6*5*4

Regards

Arun