Question

in a group of 75person 20 take tea but not coffee and 30 take tea how many take coffee but not tea​

Answer 1

Answer:

15 has taken coffee it is your answer I think

Answer 2

Answer:

let the no of person be n (AUB)

let A be the set of person who take tea n (A)

lst B be the set of person who take coffee n (b)=20

no of person drink both tea and coffee n(A common B)

n (AUB)=n (A)+n (B)-n (A Common B)

75 = 20 +30- " "

n (A common B)= 75-50

=25

= no of person having both tea and coffee is 25 person

hope it helps u...... your question it's wrong but I have give and according to me but it's right.... first Check the sum with your friend whether it is right or wrong......✌