Question

3+1=4
h) (i) In a certain examination, out of 100
students, 50 passed in Economics, 40
passed in History and 30 passed in
English. Of these, 20 passed in both
Economics and History, 15 passed in
both Histoy and English and 10 passed
in both Economics and English. How
many students passed in all the three
subjects ?​

Answer 1

Answer:

45 students passed in all 3 subjects