500 m + 350 m + 500 + 350 m + 450 m what is the perimeter ​

If a(0,0,0) and b(2,2,2) are points in coordinate space, how many paths are there from a to b that move from one lattice point to another in the positive x-,y- or z- direction?

What is the size of the matrix resulting from

Fredrick designed an experiment in which he spun a spinner 20 times and recorded the results of each spin