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?

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You Can Only Walk This Way!

Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

Used and loved by over 7 million people

Learn from a vibrant community of students and enthusiasts, including olympiad champions, researchers, and professionals.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.