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1974 AMC 12 Question 13

AMC12 · 1974 AMC 12

Question 13

Which of the following is equivalent to “If $P$ is true then $Q$ is false”?
  1. “$P$ is true or $Q$ is false.”
  2. “If $Q$ is false then $P$ is true.”
  3. “If $P$ is false then $Q$ is true.”
  4. “If $Q$ is true then $P$ is false.”
  5. “If $Q$ is true then $P$ is true.”