Question

If n (A)=8, n(B)=3and n(A U B) =9 then find n(AUB)​

Answer 1

Answer:

n(8,9,9)

Step-by-step explanation:

Answer 2

Answer:

hope it will help

Step-by-step explanation:

n(A) = 8

n(B) = 3

n(A U B) = 9

n(A n B) =?

We know,

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

         9 = 8+3-n(AnB)

         9 = 11 -n(AnB)

     9 - 11 = -n(AnB)

          - 2 = -n(AnB)

       n(AnB) = 2