Solved: How many ways are there to travel in xyz space
Chapter 5, Problem 5.5.39(choose chapter or problem)
How many ways are there to travel in xyz space from the origin (0, 0, 0) to the point (4, 3, 5) by taking steps one unit in the positive x direction, one unit in the positive y direction, or one unit in the positive z direction? (Moving in the negative x, y, or z direction is prohibited, so that no backtracking is allowed.)
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