Question 625788
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A).  A &#8745; B.  Means the intersection of set A and set B which is the set of all elements that are in both A and B.

Since none of the elements of A are in B (and vice versa, of course), there are no elements in the set A &#8745; B.

Therefore A &#8745; B = *[tex \LARGE \emptyset]

John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
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