Venn Diagrams Set Notations

Just wondering if anyone could help me with venn diagrams set notations.

What does n mean?
What does u mean?
What does ' mean?

Examples:

(A n B) u C

A n B n C'


Thanks.

n is for Intersection and u is for Union

Union is as follows: if A = 1,2,3 and B = 4,5,6 then AuB = {1,2,3,4,5,6}
Intersection is as follows: same A and B as above AnB = { }

Union is what is in either set and intersection is what is in both sets