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GATE | GATE-CS-2006 | Question 22

  • Last Updated : 14 Feb, 2018

Let E, F and G be finite sets.
Let X = (E ∩ F) – (F ∩ G) and Y = (E – (E ∩ G)) – (E – F).
Which one of the following is true?

(A) X ⊂ Y
(B) X ⊃ Y
(C) X = Y
(D) X – Y ≠ φ and Y – X ≠ φ


Answer: (C)

Explanation: If we draw the venn diagrams of both X and Y, we find that both cover exactly same region (shown in gigure below).
2006_22
So option (C) is correct.

Source: http://www.cse.iitd.ac.in/~mittal/gate/gate_math_2006.html

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