Question

If in a group of 760 persons , 510 can speak hindi and 360 can speak english , then the number of people who speak only hindi is

Answer 1

Answer:400

Step-by-step explanation:n(A U B)=760

n(A)=510

n(B)=360

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

760= 510 + 360 - n(A intersection B)

n(A intersection B) = 870 - 760= 110

n(A-B)= n(A) - n(A intersection B)= 510-110=400

*Note: n(A) are the people speaking only Hindi along with English

n(B) are the people who speak English along with Hindi

n(A-B) are the people who speak only Hindi