A man moves one unit distance for each step he takes. He always moves either parallel to the x-axis or y-axis. He starts at the point (0, 0) and reaches the point (1, 1) at the end of six steps. The number of ways he can do it is n. Find n. Please solve it.
A man moves one unit distance for each step he takes. He always moves either parallel to the x-axis or y-axis. He starts at the point (0, 0) and reaches the point (1, 1) at the end of six steps. The number of ways he can do it is n. Find n. Please solve it.