Question

What is the probability of occurrence of an event that is sure to happen?​

Answer 1

Answer:

A sure event is an event, which always happens. For example ,it's a sure event to obtain a number between 1 and 6 when rolling an ordinary die. The probability of a sure event has the value of 1.

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Answer 2

Answer:

impossible event: the probability of an occurrence event impossible to happen is 0 such an event is called an impossible event.

Step-by-step explanation:

Sure event: the probability of an event which is sure to occur is 1. such an event is called sure event or a certain event.