0 votes 0 votes Use question $33$ to prove Theorem $4.$ [Hint: Count the number of paths with n steps of the type described in question $33.$ Every such path must end at one of the points $(n − k, k)\:\text{for}\: k = 0, 1, 2,\dots,n.]$ Combinatory kenneth-rosen discrete-mathematics counting binomial-theorem descriptive + – admin asked Apr 30, 2020 admin 207 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.