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4.4.1 Probability (A-level only)

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Question 5

Sienna surveys 80 people about the musical instruments they play. They can choose from piano (PPP), violin (VVV), and guitar (GGG).

4 people play all three instruments. 7 people play piano and violin. 6 people play violin and guitar. 10 people play piano and guitar. 35 people play piano. 20 people play violin. 25 people play guitar.

a.

Draw a Venn diagram for this information.

[3]
b.

One of the people is selected at random. Given they play guitar, find the probability they do not play piano.

[3]

4.4.1 Probability (A-level only) Questions

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