Question

If n( A ) = 9 n( B ) = 5 n(A∩ B ) = 3 then n ( A U B ) = ?​

Answer 1

Answer:

11

Step-by-step explanation:

n(A U B)= n(A)+ n(B)-n(A intersection B)

n(A U B)=9 + 5 - 3

n(A U B)=14-3

n(A U B)=11

Answer 2

Answer:

n (A U B) = 11

Step-by-step explanation:

n (A U B) = n(A) + n(B) - n(A intersection B)

n (A U B) = 9 + 5 - 3

n (A U B) = 14 - 3

n (A U B) = 11