Mathematics, 03.02.2021 14:00 neariah24

In a group of 21 pupils, 8 play the flute only. 4 play the piano only.
5 play both instruments.
A student is chosen at random.
What is the probability the student plays neither instrument?

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In a group of 21 pupils, 8 play the flute only. 4 play the piano only.
5 play both instrument...

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