Question

in a group of people 12 people know music 15 people know drawing and seven people know both music and drawing if people know either music or drawing then calculate the number of people in group​

Answer 1

Answer:

LET THE PEOPLE WHO KNOW MUSIC BE A

LET THE PEOPLE WHO KNOW DRAWING

BE B

N(A∪B)=N(A)+N(B)-N(A∩B)

           =12+15-7

           =20

NO.OF PEOPLE IN THE GROUP IS 20

Step-by-step explanation:

Answer 2

Please see the attachment