Sally is traveling from city A to city C by way of city B. There are 4 flights from A to B and 6 flights from B to C. How many different routes are possible?

Question

Answer Choices

A)10

B)12

C)24

D)15

Please provide explanations step by step

Answer 1

By the counting principle there re 6*4 =24 possible routes.

Visually, think of 6 branches leading from A to B and each of those 6 branches having 4 branches leading from B to C. In total you would have 24 possible paths from A to C.