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Probability is written as a fraction.
On the top (numerator) of the fraction, we place the number of options we are looking for.
On the bottom (denominator) of the fraction, we place the total number of possible combinations.
Example
Look at this spinner.
What is the probability that the spinner will land on a multiple of 3 ?
Answer
3 and 6 are the only multiples of 3 here.
There are 2 multiples of 3.
There are 8 possible outcomes.
The probability of landing on a multiple of 3 is 2/8 which reduces to 1/4.
