Mathematics, 01.06.2020 21:57 Wxaieyu

If A= {3,4,5,6,7}, B= {1,6,7,8,9} then find n(A), n(B), n(A n B) and n(A U B) what do you observe? reasoning proof

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If A= {3,4,5,6,7}, B= {1,6,7,8,9} then find n(A), n(B), n(A n B) and n(A U B) what do you observe? r...