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Foodmart customers regularly buy at least one of the [#permalink]
27 Nov 2007, 04:59
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Foodmart customers regularly buy at least one of the following products: milk, chicken, or apples. 60% of shoppers buy milk, 50% buy chicken, and 35% buy apples. If 10% of the customers buy all 3 products, what percentage of Foodmart customers purchase 2 of the above products?
I know how to solve this using set theory. Can someone show me the Venn diag approach?