There Are 25 Elements In A Universal Set. If N(A)=14, N(B)=15 And N Left Parenthesis A Intersection

There are 25 elements in a universal set. If n(A)=14, n(B)=15 and n left parenthesis A intersection B right parenthesis=6, what is the number of elements in A union B?

 

Answer:

Step-by-step explanation:

???