Question

If n(E)=40, n(A)=22, n(A^B)=8 and n((AUB)')=6. Find n(B).​

Answer 1

Step-by-step explanation:

AUB) = n(U) - n(AUB)’

n(AUB) = 60 - 10

= 50

Now,

n(AUB) = n(A) + n(B) - n(A∩B)

so,

n(A∩B) = n(A) + n(B) - n(AUB)

= 35 + 24 - 50

= 9 is your answer…..

Answer 2

in the pic your correct answer has been given