You Can Only Walk This Way!
Discrete Mathematics
Level
4
Mr. Truong is stationed at point \(A\) and needs to make it to point \(B\) to give a lecture there. However, to make sure he can reach there on time, he decides only to go by 3 directions: up, right or up-right. In how many different routes can he go?
by
Tran Quoc Dat