Which block would you be on if you are at 179th Street?

• A. 17000 S
• B. 17900 S
• C. 17900 N
• D. 1790 S

Answer: (B)

In this grid, street numbers jump by 100 blocks for each street number, and the N or S tells you whether you’re north or south of the central baseline. So a street labeled 179th corresponds to the 17900 block. Since you’re on the south side of the baseline in this context, the correct block is 17900 S. The other options don’t fit because they point to a different street number (17000 S would be 170th Street), or place you on the north side (17900 N), or mix up the block with an incorrect number (1790 S isn’t the 179th Street).