- Consider three sets E = {1, 2, 3}, F = {1, 3, 4} and G = {2, 3, 4, 5}. Two elements are chosen at random without replacement, from the set E, and let S, denote the set of these chose elements. Let E = E - S an F2 = F US. Now two elements are chosen at random, without replacement, from the set F2 and let S denote the set of these chosen elements. Let G = F US2. Finally, two elements are chosen at random, without replacement, from the set G and S3 denote the set of these chosen elements. Let E3 E2 US3. Given that E = E3, let p be the conditional probability of the event S = {1, 2}. Then t value of p is (A) 5 (B) 35 12 (D) 25