Let L = {a1, a2, ……, an} n ≥ 0 be a list whose Pascal representation is type list = record next: ↑ list; val: integer […]

Consider a graph whose vertices are points in the plane with integer co-ordinates (x,y) such that 1≤x≤n and 1≤y≤n, where n≥2 is an integer. Two vertices […]

Let F be the set of one-to-one functions from the set {1,2,…,n} to the set {1,2,…,m}, where m≥n≥1. (a) How many functions are members of F? […]