(A) 6.7
(B) 7.0
(C) 11.3
(D) 13.0
(E) 16.2
2 . “If A is true, then B is false,” is logically equivalent to which of the
following?
I. If A is false, then B is true.
II. If B is false, then A is true.
III. If B is true, then A is false.(A) I only
(B) III only
(C) I and II only
(D) II and III only
(E) I, II, and III3 . If i^2 = −1, then all of the following are equal EXCEPT
(A) −i^2
(B) (−i)^2
(C) i^4
(D) (−i)^4
(E) −i^6