If A = (1,2,3,4), B = (-2,0,2,4), and C = (0,3,5), find each of the following.

Question

(x Ι x ∈ A and x > 2). 

Answer 1

Is the problem statement complete and correct?  If x ∈ A, as stated, then sets B and C are irrelevant.  The only other condition stated for x ∈ A is that x > 2.  Look at set A and see that only the subset {3, 4} of A meets the stated conditions.