Question

n(A)=34,n(∪)=n(A∪B)=50 and n(A∩B)=12 find the value of ∩(B)

Answer 1

Answer:

Step-by-step explanation:

Given,

• n(A) = 34
• n(U) = 50
• n(AUB) = 50
• n(A∩B) = 12

Therefore n(B) =  n(AUB) + n(A∩B) - n(A)

⇒n(B) = 50 + 12 - 34

⇒n(B) = 62 - 34

⇒n(B) = 28