Question

6. in a survey of 100 students, 25 students like math and 40 like biology, 20 like both math and biology. Find how many student does not either math nor biology​

Answer 1

Answer:

25+40+20=85

so 100-85=15

Answer 2

Total no. of students in the survey = 100

No. of students who like maths = 25

No. of students who like biology = 40

No. of students who like both math and bio= 20

So no. of students who don't like both =

100 - 25- 40 -20 = 15 students

Hope this is your answer!!