Question

in a school, 400 students opt science, 250 students opt for economics, 160 opt for both science and economics ..
(1). how many students enrolled for science only.....
(2). how many students enrolled for economics only.......

NOTE: Using Venn Diagram ​

Answer 1

Answer:

1) enrolled for science= 400-250-160=90

2) enrolled for economic=400-90-160=150