Question

If "( A) = 50 n(B) = 20 and n(An B) = 10 then n(AAB) is​

Answer 1

Step-by-step explanation:

Given,

n(A) =50

n(B) =20

n(AnB) =10

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

=50+20-10=70-10=60.

we know that,

n(A∆B)= n(AuB) -n(AnB)

= 60-10=50

Therefore n(A∆B)=50.