Question

From Andy's house to Billy's hometown you can travel by 3 roads. And to get from Billy's hometown to Willie's house you can travel by 5 roads. How many possible ways are there to travel from Andy's house to Willie's house?

Answer 1

15

Explanation:

You can go from Andy to Billy by 3 roads.

For each of those 3 roads, you can go from Billy to Willie by 5 roads.

3 * 5 = 15

Answer: 15