In a class of pupils, 13 play the flute and
piano.
12 play the flute only.
3 play the p...
Mathematics, 18.05.2021 19:10 hdjsjfjruejchhehd
In a class of pupils, 13 play the flute and
piano.
12 play the flute only.
3 play the piano only.
7 play neither instrument.
How many pupils are in the class?
Answers: 2
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