Question

Let X ={1,2,3,4,5} the number of different ordered pairs (Y,Z) that can be formed such that Y is a subset of X , Z is a subset of X and Y intersection Z is empty is

Answer 1

Let X = {1, 2, 3, 4, 5}. The number of different ordered pairs (Y, Z) that can be formed such that Y ? X, Z ? X and Y n Z is empty, is (1) 52 (2) 35 (3) 25 (4 ...