Some one can help me with this problem?
Use a Venn Diagram and the given information to determine the number of elements in the indicated region.
nA ∪ B ∪ C=61,
nA ∩ B ∩ C=9,
nA ∩ B=20,
nA ∩ C=17,
nB ∩ C=15,
n(A)=46,
n(B)=30,
and
n(C)=28.
Find n(A' ∩ B ∩ C)
Answers are:
A.5
B.8
C.7
D.6
