Question

If n(a)=7, n(b)=13, n(anb)=4thenn(aub) =?

Answer 1

Answer :

• n(A∪B) = 16

Given :

• n(A) = 7
• n(B) = 13
• n(A∩B) = 4

To find :

• n(A∪B)

Solution :

⇒ n(A∪B) = n(A) + n(B) - n(A∩B)

                  = 7 + 13 - 4

                  = 20 - 4

                  = 16

Answer 2

Step-by-step explanation:

i hope it's help you...........