Probability
Probabilities give an indication of the chance that an event will happen.
Probabilities can be expressed as fractions, decimal fractions or percentages.
The probability of an event happening = 
Some Examples of Probabaility
Double Trouble A die is thrown. What is the probability of throwing:
a. A four?
b. A number less than a 3?
c. An even number?
What is in the Bag? - A bag contains 6 white balls and 4 red balls. A student takes a ball from the bag.
What is the probability that the ball is:
a. White?
b. Red?
c. Green?
d. Red or white?