Question

n(B) = ____+ n(AnB)

a)n(A - B)
b) n(B - A)
c) n(U)​

Answer 1

Answer:

b) n(B - A)

Step-by-step explanation:

If n(A) = 5 , n(B) = 10

Therefore , n(AnB) = 10-5 = 5

Now , Let ____ be x ,

n(B) = x + n(AnB)

10 = x + 5

x = 5

Also , n(B - A) = 10-5 = 5