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Anonymous Anonymous
  • 24-07-2016
  • Mathematics
Answered

In a class of 30 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. Nine hands go up. Then the professor asked everyone with a pierced ear to do likewise. This time there are 25 hands raised. How many students have piercings both on their ears and their noses?

Verified Answer :

GuinevereFleming
GuinevereFleming GuinevereFleming
  • 24-07-2016

There are 4 students who have piercings both on their ear and their noses.

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