A, B and C are three places such that there are three different roads from A to B, four different roads from B to C and three different roads from A to C. In how many different ways can one travel from A to C using these roads?

Question

Aicharya · Accepted Answer

Direct routes from A to C = 3. Routes via B = (A to B) x (B to C) = $3 	imes 4 = 12$. Total ways = 3 + 12 = 15.

A, B and C are three places such that there are three different roads from A to B, four different roads from…

Solution