What is the probability of the following? (a) An event that is certain to occur?

Solution:

Probability defines the likelihood of the occurrence of an event.

We know that,

Probability of an event (E) = Number of favorable outcomes / Total number of outcomes

The probability of an event that is certain to occur can be considered as a sure event that always occurs whenever an experiment is performed.

Example: 

a) Probability of sunrise is equal to 1

b) Probability of getting a number between 1 to 6 on rolling a die is equal to 1

Hence, the probability of an event that is certain to occur is 1

What is the probability of the following? (a) An event that is certain to occur?

Summary:

The probability of an event that is certain to occur is 1.