Question

there are four major auto routes from Boston to Detroit and six from Detroit to Los Angeles. How many major auto routes are there from Boston to Los Angeles via Detroit?

Answer 1

Multipy 4x6=24
so your answer is 24

Answer 2

First to go from Boston(B) to Detroit(D) you have 4 roads. Then from Detroit you have 6 roads to Los Angeles(LA) . Meaning that for one road from B to D, you have 6 ways to go from D to LA. So, 6x4=24.

Answer 3

24 roads