Difference between revisions of "2006 SMT/General Problems/Problem 2"
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Latest revision as of 21:26, 15 October 2013
Problem
A customer enters a supermarket. The probability that the customer buys bread is , the probability that the customer buys milk is , and the probability that the customer buys both bread and milk is . What is the probability that the customer would buy either bread or milk or both?
Solution
The probability that the customer buys only bread is . The probability that the customer buys only milk is . Therefore, the probability that the customer buys bread and/or milk is