Question

To get to the other side of the lake, one can drive around it on Lake Road, go over the bridge or ride the ferry. How many different ways can one go across the lake and back?
5
6
9

Answer 1

If we go there by 3 ways, then for each way, there are 3 ways to come back. So, they will get multiplied.

\(\Large \color{purple}{\rightarrow 3 * 3 }\)
\(\Large \color{purple}{\rightarrow 9 }\)

9 ways.