Theoretical probability

There are 67 NRICH Mathematical resources connected to Theoretical probability
Nine or Ten?
problem

Nine or Ten?

Age
11 to 14
Challenge level
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Is a score of 9 more likely than a score of 10 when you roll three dice?
Which spinners?
problem

Which spinners?

Age
14 to 18
Challenge level
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Can you work out which spinners were used to generate the frequency charts?
Peas in a pod
problem

Peas in a pod

Age
14 to 16
Challenge level
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What is the chance this pea plant will look like its parents?
Who's the winner?
problem

Who's the winner?

Age
14 to 16
Challenge level
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When two closely matched teams play each other, what is the most likely result?
Distribution Differences
problem

Distribution Differences

Age
14 to 16
Challenge level
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How could you compare different situation where something random happens ? What sort of things might be the same ? What might be different ?
Genetics
problem

Genetics

Age
14 to 16
Challenge level
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A problem about genetics and the transmission of disease.
Magic Bag
problem

Magic Bag

Age
16 to 18
Challenge level
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A weekly challenge concerning combinatorical probability.
At least one...
problem

At least one...

Age
11 to 14
Challenge level
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Imagine flipping a coin a number of times. Can you work out the probability you will get a head on at least one of the flips?