Determine which of the following are not well-formed formulas. 1. (S T) (U W)

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Determine which of the following are not well-formed formulas.

1. (S ∙­ ­∼T) ∨ (­U ∙­ W)

2. ­∼(K ∨ L) ∙­ (⊃ G ∨ H)

3. (E ≡ ­F) ∨ (W ≡ X)

4. (B ⊃ ­T) ≡ ­(­C ⊃ U )

5. (F ≡ ­Q) ∙ (A ⊃ E ∨ T)

6. ∼­D ∨ ­[(P ⊃ Q) ∙­ (T ⊃ R)]

7. [(D ∙ ∨ Q) ⊃ (P ∨ E)] ∨ [A ⊃ (∙­ H)]

8. M(N ⊃ Q) ∨ (­C ∙­ D)

9. ­∼(F ∨ ­∼G) ⊃ [(A ≡ E) ­∙ ∼H]

10. (R ≡ S ∙­ T) ⊃ ­(­∼W ∙­ ­∼X)

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A Concise Introduction to Logic

ISBN: 978-1305958098

13th edition

Authors: Patrick J. Hurley, Lori Watson

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