Mathematics, 10.10.2021 14:40, salmirakayy4579

In a certain city, 30% of the families have a MasterCard, 20% have an American Express card, and 25% have a Visa card. Eight percent of the families have both a MasterCard and an American Express card. Twelve percent have both a Visa
card and a MasterCard. Six percent have both an American Express card and a Visa card. Is possession of an American
Express card mutually exclusive of possession of a Visa card? Why or why not?

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In a certain city, 30% of the families have a MasterCard, 20% have an American Express card, and 25%...