Question

if n(A)=20,n(B)=50,n(A union B)=60,and n(B')=20,find n(A intersection B) and n(U)


don't give annessary answer other wise answer will reported​

Answer 1

Answer:

the question is wrong buddy

there is 2 n(b)

check the question properly

Answer 2

Answer:

Step-by-step explanation:

→ N(A∩B) = N(A) + N(B) - N(A∪B)

WE HAVE,

N(A) = 20

N(B) = 50

N(A∪B)= 60

N(A∩B) = 20 + 50 - 60

⇒N(A∩B) = 10