Question 17
How many ways are there for the postman to deliver the letter to the house by passing through Point A, moving along the streets in the directions shown by the arrows?
Use the arrow directions throughout the street grid: only rightward and upward moves. Point A is the junction two blocks right and two blocks up from the postman.
Use the arrow directions throughout the street grid: only rightward and upward moves. Point A is the junction two blocks right and two blocks up from the postman.