Probabilities are written as FRACTIONS.
On the top of the fraction, we put the number of ways there are of your event happening.
On the bottom of the fraction, we put the total number of possible outcomes.
Reduce the fraction if you can.
Example
There are 3 red balls and 5 blue balls in a bag.
What is the probability of choosing a red ball?
Answer
On the top of the fraction, we put the number of ways there are of your event happening. This will be the number of red balls (i.e. 3)
On the bottom of the fraction, we put the total number of possible outcomes. This will be the total number of balls (3 + 5 = 8)
The probability is 3/8
View the activity introduction for more information on the topic
Read the question aloud
Open the accessibility toolbar to change fonts and contrast, choose a different language, use a ruler and more
Question
Do you want to skip questions and finish?
Hold up, it looks like there may be an issue with your spelling. Why not try it again?
You need to check your answer before you proceed. Are you sure you want to skip?
Teacher explanation