There are three bus lines between A and B and two bus lines-18592

There are three bus lines between A and B, and two bus lines between B and C. Find the number of ways a person can travel round trip by bus from A to C by way of B?

This multiple choice question (MCQ) is related to the book/course vu mth202 Discrete Mathematics. It can also be found in vu mth202 Final Term - Quiz No.3.