Answer the following

Question

In a hostel there are 500 students, out of which 275 drink tea, 130 drink coffee and 260 drink tea and coffee both. Find the number of students who do not drink tea or coffee

Answer 1

Usually the number who drink Tea includes everyone who drinks tea, the number who drink coffee includes everyone who drinks coffee REGARDLESS OF WHETHER THE PERSON(S) DRINK BOTH. Under that interpretation, these numbers do not work.

 

Therefore it must be assumed that 275 drink tea ONLY

130 drink coffee ONLY

and then 260 drink BOTH.  BUT THESE NUMBERS DO NOT WORK EITHER---total exceeds 500.

 

Therefore I believe that you have a mistaken number in the given facts.