Question

If n(A) = 22, n(B) = 34 and n(AUB) = 42 then n(A n B) = ?​

Answer 1

Step-by-step explanation:

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

=> 42 = 22 + 34 - n(A n B)

=> 42 = 56 - n(A n B)

=> n(A n B) = 56 - 42

=> n(A n B) = 14