Practice problem
Let A={1,3,4,6,7}A = \{1, 3, 4, 6, 7\}A={1,3,4,6,7}, B={2,7,4}B = \{2, 7, 4\}B={2,7,4}, and C={5,7,2}C = \{5, 7, 2\}C={5,7,2}. Which elements are in (A∩B)∪C(A \cap B) \cup C(A∩B)∪C?
111
222
333
444
555
666
777
Type a concept, like “slope” or “photosynthesis”.
