1.

Which of the following statements are true

Answer»

Answer:

WHERE ARE THEY DEAR

Explanation:

usual, PROVE it using the general HEURISTIC that

X=YX=Y if and only if X⊆Y and X⊇Y.X⊆Y and X⊇Y.

In other WORDS, take a generic element of A×(B−C)A×(B−C) and SHOW that it also must be an element of (A×B)−(A×C)(A×B)−(A×C), and vice versa.



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