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2. A conditional statement P>Q is false if
a. P is true. b. Q is false. c. P is true and Q is false. d. All of the above.

3. A biconditional P=Q is true if
a. P is true and Q is true. b. P is true and Q is false. c. Both of the above. d. None of the above.

4. A biconditional P=Q is logically equivalent to
a. P&Q b. P>Q c. (P>Q)&(Q>P) d. None of the above.