Guest Session: 1 Question Remaining. Create Account to save progress.
Login
Set Theorymedium
0:00.0

The set S={1,2,3,4,5,6,7}S = \{1, 2, 3, 4, 5, 6, 7\}S={1,2,3,4,5,6,7} is partitioned into three pairwise disjoint subsets AAA, BBB, and CCC such that 1∈A1 \in A1∈A, 2∈B2 \in B2∈B, and 3∈C3 \in C3∈C. If A∪B={1,2,4,5,6}A \cup B = \{1, 2, 4, 5, 6\}A∪B={1,2,4,5,6}, B∪C={2,3,5,6,7}B \cup C = \{2, 3, 5, 6, 7\}B∪C={2,3,5,6,7}, and n(B)=3n(B) = 3n(B)=3, find the set BBB.