42. THe number of unordered pairs (A,B), of subsets of the set S = {1, 2, ....., 10}, such that A ∩ B = ∅ and A ∪ B = S, is (a)210 (b)29 (c)10C2 (d)1 + 25 Share with your friends Share 0 Chandan chaurasiya answered this Dear student regards 0 View Full Answer B. Vishnu answered this 2power10 0