Question

Let X = {a,e,i,o,u} and Y = {a,g,o,f} , verify that n(A-B) = n(A) - n(A∩B)


CORRECT ANSWER WILL BE BRAINLIST​

Answer 1

Definition:

Let A and B be subsets of some universal set U . The intersection of A and B , written A∩B and read “ A intersect B ,” is the set of all elements that are in both A and B . That is,

A∩B={x∈U|x∈A and x∈B}.(5.1.2)

The union of A and B , written A∪B and read “ A union B ,” is the set of all elements that are in A or in B . That is,

A∪B={x∈U|x∈A or x∈B}