11th Class Punjab Board Exams Quizzes MCQs Quizzes Punjab Mathematics 11th Class Model Paper Chapter No 1

Question:
If A ∩ B ≠ ∅ then in (B - A) =

Option A):
n(A)-n(A ∩ B)
Option B):
n(A)
Option C):
n(B)
Option D):
n(B)-n(A ∩ B)

Correct Answer is Option D):
n(B)-n(A ∩ B)