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Q: If P is false, and Q is false, the truth-value of "P ?Q" is false. true. Cannot be determined. All of the above.
A: For clarification, the following paragraph is taken from Wikipedia. Biconditional joins two simpler propositions, and we write "above example (sic)", which is read "P if and only if Q". [ It expresses that P and Q have the same truth-value, thus P if and only if Q is true in cases 1 and 4, and false otherwise. 1. P is true and Q is true 2. P is true and Q is false 3. P is false and Q is
true 4. P is false and Q is false Here is my answer... Therefore, if P is false and Q is false, the truth-value of P iff (if and only if) Q is true. "True". ]
Original conversation
User: If P is false, and Q is false, the truth-value of "P ?Q" is false. true. Cannot be determined. All of the above.

Weegy: For clarification, the following paragraph is taken from Wikipedia. Biconditional joins two simpler propositions, and we write "above example (sic)", which is read "P if and only if Q". [ It expresses that P and Q have the same truth-value, thus P if and only if Q is true in cases 1 and 4, and false otherwise. 1. P is true and Q is true 2. P is true and Q is false 3. P is false and Q is true 4. P is false and Q is false Here is my answer... Therefore, if P is false and Q is false, the truth-value of P iff (if and only if) Q is true. "True". ]
jher000|Points 7504|

User: "~ P v Q" is best read as Not P and Q It is not the case that P and it is not the case that Q It is not the case that P or Q It is not the case that P and Q

Weegy: Biconditional joins two simpler propositions, and we write "above example (sic)", which is read "P if and only if Q". [ It expresses that P and Q have the same truth-value, thus P if and only if Q is true in cases 1 and 4, and false otherwise. 1. [ P is true and Q is true 2. P is true and Q is false 3. P is false and Q is true 4. P is false and Q is false Here is my answer... Therefore, if P is false and Q is false, the truth-value of P iff (if and only if) Q is true. "True". ] ]

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