Count Relations

Let A be a set of the first N positive integers :A={1,2,3,4.........N} Let B be the set containing all the subsets of A. Let A be a set of the first N positive integers :A={1,2,3,4.........N} Let B be the set containing all the subsets of A. Professor Eric is a mathematician who defined two kind of relations R1 and R2 on set B. The relations are defined as follows: R1={ (x,y) : x and y belong t