Math Chapter Wise Sets, Relations And Functions English MCQ TGT 2009 TGT 2010 Q.If X = {2, 3}, Y = {3, 4, 5}, Z = {2, 5} then which of the following is false? AX – Y ≠ φ BY – Z ≠ φ CZ – X ≠ φ D(X – Y) – Z ≠ φ Show answer Correct answer: (X – Y) – Z ≠ φ