Question

In a group of 50 students 35 speak hindi,25 speak both and all the students speaks atleast 1of2 languages .find the no. of studengs who speak english but not hindi?


Hey mates plzz help me fast..​

Answer 1

by using the property n(aUb)=n(a)+n(b)-n(a intersection b). let's take n(a)=n(H)= no. of students speaking hindi. and n(b)=n(E)=no. of students who speak English putting these values in the given formula we get 50=35+n(E)-25. therefore n(E)=40. now 25 speak both the languages therefore. no. of students who speak only English =n(E)-n(H intersection E). =40-25. =15. hope it helps u