In a class of 40 students, everyone has either a pierced nose or a pierced ear.

Mathematics
Tutor: None Selected Time limit: 1 Day

Jun 21st, 2015

Thank you for the opportunity to help you with your question!

the ans is 3....

8 have pierced nose,32 don't have,

35 have pierced ear,5 don't have....therefore those who have both=8-5=3

ase let me know if you need any clarification. I'm always happy to answer your questions.
Jun 21st, 2015

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