TO DETERMINE THE SOURCE OF NEWS IN THE EMPLOYEES OF A COMPANY, N P...

10.

To determine the source of news in the employees of a company, N people have

been interviewed and the following results have been obtained :

A) 50 people use TV as well as other sources

B) 61 people do not use radio

C) 13 people do not use newspaper

D) 74 people use at least two sources

If the sources contain only newspaper, TV and radio, what is the least value of N?

Answer :