{2, 3, 5, 7} और {3, 5, 8, 9} का सर्वनिष्ठ समुच्चय (intersection) है:
उत्तर: (A) {3, 5} — Intersection (A∩B) = elements common to both sets = {3, 5}. Union (A∪B) = {2,3,5,7,8,9}. A-B = {2,7}. B-A = {8,9}.
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