# Given the probability p=1/3 that an event will happen, how do you find the probability that the event will not happen?

##### 1 Answer

May 17, 2017

The probability that the event will not happen is

#### Explanation:

A probability is a fraction between **happening of an event**. A probability of

A probability of

or

We know that it is certain that either an event will happen or it will not happen.

Hence probability of happening of an event **plus** probability of not happening of an event add up to

Hence, the probability that the event will not happen is