2 An ordinary coin is to be tossed twice in the usual way. What is your probability for the head turning up both times-- (a) 1/3, because 2 heads is one of three possibilities: 2 heads, 1 head, 0 ...

The probability scale can be subdivided into equal intervals to show other probabilities: For example, four intervals labelled from 0 to 1 with subdivisions marked ¼ and ½ and ¾. This is the ...

In maths, probabilities are usually written as fractions, decimals or percentages with values between 0 and 1. An event which is impossible has a probability of 0 and an event which is certain has ...