Question

In a class of 100 students, 72 students drink tea, 43 students drink coffee. Each one out of them have atleast one beverage. Then how many of them have only coffee?​

Answer 1

Answer:

43

Step-by-step explanation:

Let A= students who drink tea

and B= students who drink coffee.

n(A)=72

n(B)=43

n(A U B)=100

n(A ^ B)=n(A)+n(B)-n(A U B)

=72+43-100 = 15

Students who drink both tea and coffee =15

Students who only drink coffee=43-15= 28