1. The problem statement, all variables and given/known data 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? 2. Relevant equations 3. The attempt at a solution Total number of Stations=10 Types of tickets=2*[C(10,2)] =90 Does it seem ok to u?