Question

In agroup of 25 members 15 members drinks tea amd 6 members drinks both tea and cofee how many members drinls cofee

Answer 1

10 members drink coffee

Answer 2

hey mate.....


Let A be the set of people who like tea and B , who like coffee. Total no.of people is 50. No.of people who like neither coffee nor tea is 6.

Then n(AUB) = 50–6 = 44. n(A)=30, n(B)= 20

n(AnB) = n(A)+n(B)-n(AuB)=30+20–44=6

No.of people who like only coffee

=n(B) - n(AnB)= 20–6=14