Discrete Mathematics
# Discrete Mathematics Warmups

As a tourist in NY, I want to go from the Grand Central Station (42nd street and 4th Avenue) to Times Square (47th street and 7th Avenue). Along the way, I promised to meet up with my friend who was at 42nd street and 7th avenue

If I only walk West and North, how many ways are there for me to get there?

$(42^\text{nd}$ street and $4^\text{th}$ avenue$)$ to Times Square $(47^\text{th}$ street and $7^\text{th}$ avenue$).$

As a tourist in NY, I want to go from the Grand Central StationIf I only walk West and North, how many ways are there for me to get there?

As a tourist in NY, I want to go from the Grand Central Station (42nd street and 4th Avenue) to Times Square (47th street and 7th Avenue). I needed my morning coffee, and wanted to go to a Starbucks that's located at 44th street and 5th avenue.

If I only walk West and North, how many ways are there for me to get there?

As a tourist in NY, I want to go from the Grand Central Station (42nd street and 4th Avenue) to Times Square (47th street and 7th Avenue). I had to drop by the ATM, which was located on 5th Avenue, between 44th and 45th street.

If I only walk West and North, how many ways are there for me to get there?

**cannot** walk through it.

If I only walk West and North, how many ways are there for me to get there?