How many different routes are there from point to point if you can only move to the right or down along the drawn segments?
https://latex.artofproblemsolving.com/0/1/5/0159fe911f0adaa535ffec88c1a5e6825b122092.png
You need to make 4 moves to get from Point A to Point B.
2 of these will be down, so there are \({4 \choose 2} = \color{brown}\boxed{6}\) ways to do it.