Question

let n(u)=90,n(a)=50,n(b)=30,n(a∪b)=70 then find the correct statement
pls see the pic
and help
i will brainliest for correct answer​

Answer 1

Answer:

Step-by-step explanation:

N(U)= 60

N(AUB)'=10

N(AUB)=N(U)- N(AUB)'

= 60-10

=50

So N(A intersection B)= N(A)+N(B) - N (AUB)

= 35+24-50

=9