On a railway there are 20 stations. The number of different tickets required in order that it may be possible to travel from every station to every station is

On a railway route there are 20 stations. What is the number of different tickets required in order that it may be possible to travel from every station to every other station

On a railway there are 10 stations. The number of types of tickets required in order that it may be possible to book a passenger from every station to every other is

On a railway track, there are 20 stations. The number of tickets required in order that it may be possible to book a passenger from every station to every other is

On a railway route there are 15 stations. The number of tickets required in order that it may be possible to book a passenger from every station to every other is

On a raiway there are 10 stations. The number of types of tickets required in order that it may be possible to book a passenger from every staton to every other is

There are 13 stations on a certain railway line.How many kinds of different single third class tickets have to be printed in order that it may be possible to travel from any station to any other?

There are 10 railway stations between a station X and another station Y. Find the number of different tickets that must be printed so as to enable a passenger to travel from one station to any other.

There are 50 stations on a railway line.The number of different kinds of single 2 nd class tickets must be printed so as to enable a passenger to travel from one station to another station is:

There are 50 stations on a railway line. The number of different kinds of single 2nd class tickets must be printed so as to enable a passenger to go from one station to another station is