Probability

There are 130 NRICH Mathematical resources connected to Probability
The Derren Brown coin flipping scam
problem

The derren brown coin flipping scam

Age
16 to 18
Challenge level
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Calculate probabilities associated with the Derren Brown coin scam in which he flipped 10 heads in a row.
Dicey Decisions
problem

Dicey decisions

Age
16 to 18
Challenge level
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Can you devise a fair scoring system when dice land edge-up or corner-up?
Two and One
problem

Two and one

Age
5 to 7
Challenge level
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Terry and Ali are playing a game with three balls. Is it fair that Terry wins when the middle ball is red?
Can't find a coin?
problem

Can't find a coin?

Age
11 to 14
Challenge level
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Can you generate a set of random results? Can you fool the random simulator?
What's the point of squash?
problem

What's the point of squash?

Age
14 to 18
Challenge level
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Under which circumstances would you choose to play to 10 points in a game of squash which is currently tied at 8-all?
A Brief History of Probability
problem

A brief history of probability

Age
11 to 14
Challenge level
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Can you help d'Alembert discover the probabilty of at least one head in two coin flips?