Question

In a hostel there are 125 students, out of which 80 drink tea, 60 drink coffee and 20 drink tea and coffee both. Find the number of students who do not drink tea or coffee
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Answer 1

Answer:

60 only drink tea, and 40 only drink coffee. Then 20 drink both. now, how many don't drink tea or coffee out of 125? 125–120=5