Question 21
How many ways are there to travel from House A to House B if you can only move to the right and down?
Travel along the drawn road segments only; House A and House B mark the upper-left and lower-right corners.
Answer entry: enter the whole number only, without units. The source paper uses four-digit shaded answers with leading zeros; ordinary integer entry is used here.
Travel along the drawn road segments only; House A and House B mark the upper-left and lower-right corners.
Answer entry: enter the whole number only, without units. The source paper uses four-digit shaded answers with leading zeros; ordinary integer entry is used here.