Question:medium

If the statement \( p \leftrightarrow (q \rightarrow p) \) is false, then the true statement is:

Show Hint

When analyzing logical biconditional statements, test various truth values for the components involved to identify when the statement becomes false. Then compare this to the given options.
Updated On: Mar 28, 2026
  • \( p \)
  • \( p \rightarrow (p \vee \sim q) \)
  • \( p \wedge (\sim p q) \)
  • \( (p \vee \sim q) \rightarrow p \)
Show Solution

The Correct Option is B

Solution and Explanation

Let's analyze the statement \( p \leftrightarrow (q \rightarrow p) \). This is a biconditional statement, which is false only when its components have differing truth values.Case 1: \( p \) is true, \( q \) is false. \( (q \rightarrow p) \) is true. Thus, \( p \leftrightarrow (q \rightarrow p) \) becomes true \( \leftrightarrow \) true, which is true. This case does not falsify the statement.Case 2: \( p \) is false, \( q \) is true. \( (q \rightarrow p) \) is false. Thus, \( p \leftrightarrow (q \rightarrow p) \) becomes false \( \leftrightarrow \) false, which is true. This case also does not falsify the statement.Case 3: \( p \) is false, \( q \) is false. \( (q \rightarrow p) \) is true. Thus, \( p \leftrightarrow (q \rightarrow p) \) becomes false \( \leftrightarrow \) true, which is false. This case satisfies the condition of falsifying the statement.Now, we evaluate the given options for \( p \) false and \( q \) false:A. \( p \) is false.B. \( p \rightarrow (p \vee \sim q) \) becomes false \( \rightarrow \) (false \( \vee \) true) which evaluates to false \( \rightarrow \) true, resulting in true.C. \( p \wedge (\sim p q) \) becomes false \( \wedge \) (true \( \wedge \) false) which evaluates to false \( \wedge \) false, resulting in false.D. \( (p \vee \sim q) \rightarrow p \) becomes (false \( \vee \) true) \( \rightarrow \) false which evaluates to true \( \rightarrow \) false, resulting in false.Option B is the only statement that is true when \( p \) is false and \( q \) is false.
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