If “Polly is good” and “Johnny is good” are true statements, which of the statements in Exercise do you think are true?
Let P =. Polly is good and Q = Johnny is good,and let us agree that bad = not good. Write each of the following statements in symbolic form:
a. Both Polly and Johnny are good.
b. Either Johnny or Polly is good.
c. Polly is not good, or Johnny is bad.
d. If Polly is good, then Johnny is bad.
e. It is false that Polly is bad.
f. Johnny is good iff Polly is good.
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