McGraw Hill Glencoe Geometry, 2012
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McGraw Hill Glencoe Geometry, 2012 View details
6. Probabilities of Mutually Exclusive Events
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Exercise 1 Page 961

Events that cannot occur at the same time are mutually exclusive. Mutually exclusive events have no outcomes in common. For example, because it is not possible to toss a coin and obtain heads and tails at the same time, these two events are mutually exclusive.

Addition Rules for Probability
If and are mutually exclusive events, the probability that and will occur is If and are not mutually exclusive events, the probability that and will occur is

Let be getting a jack card and be getting a club card from a standard deck of cards.

There are four jacks in the deck and one of them is a club, so it is possible to be both a jack and a club. Therefore, and are not mutually exclusive events.