Mathematics, 06.07.2021 18:40 totallybriii

In a group of 36 pupils, 10 play the flute only. 15 play the piano only. 4 play neither instrument. A student is selected at random. What is the probability the student plays both instruments?

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In a group of 36 pupils, 10 play the flute only. 15 play the piano only. 4 play neither instrument....