Number of Tickets for A to B: 90

[Amith2006]

Homework Statement

There r 8 Stations between city A & city B. What is the number of types of tickets to be printed So as to enable a city passenger to commute from one place to another?

Homework Equations

The Attempt at a Solution

Total number of Stations=10
Types of tickets=2*[C(10,2)]
=90
Does it seem ok to u?

 

[Dick]

Seems ok to me.

 

[Amith2006]

thanx.