Question
in a class of 30 students 20 played piano 17 played violin and 7 played both find the number of students who played violin only, piano only
Answers
Piano only = 20-7 = 13
violin only = 17 - 7 = 10
check: 13+10+7 = 30
violin only = 17 - 7 = 10
check: 13+10+7 = 30
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