Mathematics, 01.11.2019 02:31 surfer89
In a class of 40 students, everyone has either a pierced nose or a pierced ear. the professor asks everyone with a pierced nose to raise his or her hand. seven hands go up. then the professor asked everyone with a pierced ear to do likewise. this time there are 36 hands raised. how many students have piercings both on their ears and their noses? i would think the obvious answer could be 7 but not necessarily. can anyone me with this formula?
Answers: 2
Students either nose or ear Pierced
no of students having both nose and ear pierced
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In a class of 40 students, everyone has either a pierced nose or a pierced ear. the professor asks e...
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