What is the probability of the following?
(a) An event that is certain to occur?
Probability defines the likelihood of the occurrence of an event.
Answer: The probability of an event that is certain to occur is 1.
Let's look into an example to understand this
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.
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