In a group of 38 pupils, 13 play the flute only.
7 play the piano only.
5 play neither instr...
Mathematics, 22.02.2021 01:00, blackeyes7659
In a group of 38 pupils, 13 play the flute only.
7 play the piano only.
5 play neither instrument.
How many pupils play both instruments?
Answers: 3
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