Roster and set-builder forms, types of sets, set operations, Venn diagrams.
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Q1 · Sets · EASY
If A = {2, 4, 6} and B = {4, 6, 8}, then A ∪ B is:
Q2 · Sets · EASY
If A = {1, 2, 3} and B = {3, 4, 5}, then A ∩ B is:
Q3 · Sets · MEDIUM
If n(A) = 5, n(B) = 7 and n(A ∩ B) = 3, then n(A ∪ B) is: