Question: 1. Prove that the argument is valid [(CD)C][(CD)D] 2. Prove that the following argument is valid (P(QR))(RS)(ST)(TP) 3. Prove the following is valid using symbolic

1. Prove that the argument is valid [(CD)C][(CD)D] 2. Prove that

1. Prove that the argument is valid [(CD)C][(CD)D] 2. Prove that the following argument is valid (P(QR))(RS)(ST)(TP) 3. Prove the following is valid using symbolic logic rules. Use the statement letters D, J, and T. If DeWayne is not tall then Jayden is not DeWayne's borther. If DeWayne is tall then Trevor is DeWayne's brother. Therefore, if Jayden is DeWayne's brother, then Trevor is DeWayne's brother

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