Question

S = (a, b, c, d, e), then the cardinality of the set formed by the subsets of cardinality
2 is
(A) 4
(B) 6
(C) 10
(D) 12​

Answer 1

If n(A) = a, n(B) = b, and the number of subsets

of A exceeds subsets of B by 3072, then find the

values of a and b.