Probability

There are 124 NRICH Mathematical resources connected to Probability
Taking Chances Extended
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Taking Chances Extended

This article, for students and teachers, is mainly about probability, the mathematical way of looking at random chance.
con Tricks
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con Tricks

Here are some examples of 'cons', and see if you can figure out where the trick is.
Playing Squash
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Playing Squash

Playing squash involves lots of mathematics. This article explores the mathematics of a squash match and how a knowledge of probability could influence the choices you make.
The Mean Game
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The Mean Game

Edward Wallace based his A Level Statistics Project on The Mean Game. Each picks 2 numbers. The winner is the player who picks a number closest to the mean of all the numbers picked.
Placeholder: several colourful numbers
problem

Odd Dice

Age
14 to 16
Challenge level
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These strange dice are rolled. What is the probability that the sum obtained is an odd number?
Placeholder: several colourful numbers
problem

Winning Marble

Age
14 to 16
Challenge level
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How can this prisoner escape?
Statins and Risk
problem

Statins and Risk

Age
14 to 16
Challenge level
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"Statins cut the risks of heart attacks and strokes by 40%"
Should the Professor take statins? Can you help him decide?
How Risky \is my diet?
problem

How Risky is my diet?

Age
11 to 16
Challenge level
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Newspapers said that eating a bacon sandwich every day raises the risk of bowel cancer by 20%. Should you be concerned?
Chance Combinations
problem

Chance Combinations

Age
11 to 14
Challenge level
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Can you design a bingo board that gives you the best chance of winning?