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2014-03-31T19:13:14-03:00
N (A) = 600

n (B) = 500

n (A∩B) = ?

n (AUB) = 1000 - 200 = 800

n (AUB) = n (A) + n (B) - n (A∩B)

800 = 600 + 500 - n (A∩B)

n (A∩B) = 1100 - 800 = 300












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