Question

in a town of 700 persons, 400 persons speak hindi, 200 speak French and 100 speak both Hindi and french. Find the number of persons who speak hindi only​

Answer 1

Answer:

300

Step-by-step explanation

n(A∪B)=700

n(A)=400

n(b)=200

n(A∩B)=100

to find,

n(A-B)

n(A)=n(A-B)+n(A∩B)

400=n(A-B)+100

400-100=n(A-B)

300=n(A-B)