Question

EXERCISE A INSTRUCTIONS State the converses of the following propositions, and indicate which of them are equivalent to the given propositions:

PROBLEMS

1. No people who are considerate of others are reckless drivers who pay no attention to traffic regulations.

2. All graduates of West Point are commissioned officers in the U.S. Army.

3. Some European cars are overpriced and underpowered automobiles.

4. No reptiles are warm-blooded animals.

5. Some professional wrestlers are elderly persons who are incapable of doing an honest day’s work.

Answer 1

Converses of the given Propositions:

• People who are considerate about others are safe drivers paying attention to traffic regulations.
• None of the Graduates of West Point isn’t a commissioner in the U.S. Army.
• Some of the European cars are overpriced for being overpowered vehicles.
• All reptiles are cold-blooded animals.
• Some professional wrestlers are elderly persons who are capable of doing honest day’s work.

Preposition 1, 2 and 4 are equivalent propositions, with no apparent change in the sense of communication.