1. Assume that set A is a subset of set B. Which of the following can be derived? a. (Vx)(x E A + + x + B) b. (Vx)(x + B + x + A) c. JA B f. A 2B 2. Without any assumptions, which of the following statements are correct? = = a. JA X B| = |AX|B b. JAU B| = |A|+|B| c. |A - B = |AL - ANBI d. A - B = A - (ANB) e. A - B = An B' =