MathematicsWhen the sum of probability of two events is 1, the events are called ____.

When the sum of probability of two events is 1, the events are called ____.


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    Solution:

    When the sum of probability of two events is 1, the events are called complementary events.
    Given that the sum of probability of two events is 1.
    We know that the probability of any event lies between 0 and 1.
    If an event is going to happen is E and the event which is not going to happen is E’, then their sum would be 1.
    Such events are called complementary events.
    Hence, the required answer is complementary events.
     
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