Question1

Which of the following statements are true for all sets A,B,C? Select all that apply.

(a)(AB)A = A(BA)

(b)(A B)\C = (A\C) (B\C)

(c)C\(A B) = (C\A) (C\B)

(d)(C\A)c= (Cc) \ (Ac)

(e)(AB)c= (Ac) (Bc)

Question 2

Which of the the following sets have 6 elements? Select all that apply (intervals are over )

(a)[0,1] (1,6)

(b)(0,1) [1,6]

(c)(0,2] [1,4)

(d)[0,2] (1,4)

(e)None of the others