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# Cosy Corner

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Age 11 to 14

Challenge Level

*Cosy Corner printable sheet - problem
Cosy Corner printable sheet - recording sheet*

A container holds $3$ red balls, $2$ blue balls and $1$ yellow ball.

The balls are identical in all ways except colour.

Shake the container, and look at how the balls settle in the triangle.

**You win if at least one of the red balls is in a corner.**

Did you win?

Complete several shakes and look at your results.

Approximately how often do you think you would win if you completed $100$ shakes?

Make a prediction and then check it by doing the experiment.

Can you find a way of working out the theoretical probability of winning?

*You may find this Recording Sheet useful.*