Question

if n(A)=7 , n(B)=17 ,n(A subset B)=4 then find n(A union B)​

Answer 1

Hi, See my answer. n(A)=7 , n(B)=17 ,n(A n B)=4 then find n(A u B)

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

= 7+17-4

= 20

So, 20 is answer.

Answer 2

Answer:

Step-by-step explanation:

n(A)=7 , n(B)=17 ,n(A n B)=4 then find n(A u B)

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

= 7+17-4

= 20

So, 20 is answer.