### What is the range of probabilities?

The probability of an event that is impossible is 0 and the probability of an event that is certain is 1. The probability of any event occurring falls within these two numbers as a decimal, if it is not impossible or certain. These videos will help you understand the range of probabilities in Prelim Standard Math.

The video below explains this in more detail.

### How to calculate probabilities

The following video explains how to calculate probabilities when given certain information by a question.