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    jpogirl26's Avatar
    jpogirl26 Posts: 1, Reputation: 1
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    #1

    Oct 6, 2010, 02:09 PM
    Are mutually exclusive events also complementary events?
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    Oct 7, 2010, 02:27 AM

    Not necessarily.

    Say you have a die and roll it.

    Let A be the event a number greater than 4 is obtained.
    Let B be the event a number smaller than 3 is obtained.

    Events A and B are exclusive, but they are not complementary because:
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