Use the data in the figure to answer each question (you can click on the above figure to enlarge it):
a)   How many elements are in the set A?
b)   How many elements are in B or C?
c)   How many elements are in A but not C?
d)   How many elements are in A or B or C ?
e)   How many elements are in neither A nor B nor C?
f)   How many elements are in U?