Which of the following sentences is a well-formed formula (wff) in TL? 1. [L & (Q É C)] É {[(D É Y) Ú (U º G)] & O} 2. K É R & J 3. HOW ARE YOU? 4. (S Ú R) É (F & T 5. ÚP~O
John Smith
Which of the following sentences is a well-formed formula (wff) in TL?