A school jazz band contains three different musical instruments ― saxophone (S), clarinet (C) and drums (D). Students in the band are able to play one, two or three different instruments.
In a class of 40 IB students, 25 belong to the jazz band. Out of these 25
3 can play all three instruments
5 can play the saxophone and clarinet only
5 can play at least the clarinet and drums
7 can play at least the saxophone and drums
16 can play the saxophone
12 can play the clarinet.
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