EXAMPLE 2.1.21

Select the statement that is logically equivalent to "I'm careful or I make mistakes."

A. I'm careful and I make mistakes.

B. I make mistakes and I'm careful.

C. If I'm not careful, then I make mistakes.

D. None of these.

Solution: In general, the statement "p or q" is equivalent to "If not p, then q." The correct choice is C.