Set operations, types of sets, Venn diagrams, set-builder notation.
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Q1 · Sets · EASY
If A = {1, 2, 3, 4} and B = {3, 4, 5, 6}, then A ∩ B is:
Q2 · Sets · MEDIUM
If n(A) = 5, n(B) = 7, and n(A ∩ B) = 3, then n(A ∪ B) is:
Q3 · Sets · HARD
In a class of 50 students, 30 like Mathematics, 25 like Physics, and 10 like both. The number of students who like neither Mathematics nor Physics is: