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Mathematics, 21.02.2021 23:40 dlr1628

In a class of pupils, 11 play the flute and piano. 10 play the flute only.
5 play the piano only.
3 play neither instrument.
How many pupils are in the class?

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In a class of pupils, 11 play the flute and piano. 10 play the flute only.
5 play the piano...

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