If X = {1,2,3,4,5,6}, Y = {2,4,5,7} and Z = {1,4,5}, which of the following is (...
Question
If X = {1,2,3,4,5,6}, Y = {2,4,5,7} and Z = {1,4,5}, which of the following is (are) correct?
I. n(X ∪ Y ∪ Z) = 13II. (X ∩ Y) ∪ Z = X ∩ (Y ∪ Z)
III. n(X ∩ Y ∩ Z) = 2
Options
A)
I only
B)
II only
C)
I and III only
D)
II and III only
The correct answer is C.
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