Question

1)t f n (A) = 60 nB)= 80, DCA OB)
then n(AUB)
n (AUB) = ?​

Answer 1

Answer:

n(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…..