Question

In a competitive exam 50 students passed in English. 60 students passed in Mathematics. 40 students
passed in both the subjects. None of them fail in both the subjects. Find the number of students who
passed at least in one of the subjects?
Let A be the set of students who passed in English = n(A) = 50
and B be the set of students who passed in Mathematics = n(B) = 60
Total number of students who passed in both Subject = _____ = 40
Total Number of students who passed at least in one of the subjects = _____
we know,
n(A ∪ B) =_____
= _____
= 110 - 40
= _____
Number of students who passed at least in one of the subjects = _____

Answer 1

Answer:

110=40

20

n(AUB) =50

70