Question: To prove that a set X does not equal a set Y , you need to find an element that is in _ _ _

To prove that a set X does not equal a set Y , you need to find an element that is in _____ and not _____ or that is in _____ and not _____.
fill the blanks from the options below
Question 7Select one:
a.
all answers are wrong.
b.
X; in Y ; Y ; in X
c.
Z; in X ; X ; in Z
d.
X; in X ; Y ; in Y

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