Question

if a and b are two disjoint sets with n(a) =3 amd n(b) =6 then compute n{(a-b) u(b-a)}​

Answer 1

Sorry I don’t know but when I will know I will answer it ok once again sorry

Answer 2

Answer:

Given that, A and B are two disjoint sets

n(A)=15 and n(B)=10

Then,

n(A⋂B)=0 becauseA and B both are disjoint

n(A⋃B)=n(A)+n(B)−n(A⋂B)

n(A⋃B)=15+10−0

n(A⋃B)=25

Hence, this is the answer.