Question

Coming
In a
achool hostel, there
are 100 students
of which
60 drink tea, so drink
coffee and 30
both tea
tea and coffe.
Find
the
of students who do not
bake
coffee,
30 drink
number
tea or​

Answer 1

Answer:

Since , n(A∪B)=n(A)+n(B)−n(A∩B)

Number of students who take tea or coffee =60+50−30=80

So, number of students who do not take tea or coffee =100=80=20

Answer 2

Answer:

Step-by-step explanation:

30 drink both+ 20 drink only coffee+ 30 drink only tea =80

Those who didn't take either tea or coffee = 100-80 = 20

hope it helps you