Question

Define complementary events. Give an example.​

Answer 1

Two events are said to be complementary when one event occurs if and only if the other does not. ... For example, rolling a 5 or greater and rolling a 4 or less on a die are complementary events, because a roll is 5 or greater if and only if it is not 4 or less.

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Answer 2

It is said that when one event happens the other will occur. the chances of two complimentary events increases