Quiz Content

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. Determine whether the argument is valid or invalid. If it is invalid, select a counterexample.
1. (A • B) ⊃ (C ∨ D)
2. A / C ∨ D

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. Determine whether the argument is valid or invalid. If it is invalid, select a counterexample.
1. (E ∨ F) ⊃ (G • H)
2. E / G

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. Determine whether the argument is valid or invalid. If it is invalid, select a counterexample.
1. (I ⊃ J) ⊃ K
2. I / K

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. Determine whether the argument is valid or invalid. If it is invalid, select a counterexample.
1. (L ⊃ M) ⊃ N
2. M / N

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. Determine whether the argument is valid or invalid. If it is invalid, select a counterexample.
1. A ⊃ B
2. C ⊃ D
3. ~A ⊃ C / B ∨ D

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. Determine whether the argument is valid or invalid. If it is invalid, select a counterexample.
1. E ⊃ F
2. G ⊃ H
3. F ∨ H / E ∨ G

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. Determine whether the argument is valid or invalid. If it is invalid, select a counterexample.
1. A ⊃ (B • C)
2. C ⊃ (D ∨ A)
3. (~D ∨ E) ⊃ A / D

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. Determine whether the argument is valid or invalid. If it is invalid, select a counterexample.
1. F ⊃ (G • H)
2. H ⊃ (I ∨ ~F)
3. (~I ∨ K) ⊃ F / I

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. Determine whether the argument is valid or invalid. If it is invalid, select a counterexample.
1. L ⊃ (M ∨ N)
2. N ⊃ (O ∨ ~L)
3. (L ∨ ~M) ⊃ N / ~L

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. Determine whether the argument is valid or invalid. If it is invalid, select a counterexample.
1. P ⊃ (~Q ∨ R)
2. Q ⊃ (S • ~R)
3. (Q ∨ T) ⊃ P / ~Q

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. Determine whether the given proposition is a logical truth or not. If it is not a logical truth, select a false valuation.
(A • B) ∨ (A • ~B)

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. Determine whether the given proposition is a logical truth or not. If it is not a logical truth, select a false valuation.
(C ∨ D) ∨ (C ∨ ~D)

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. Determine whether the given proposition is a logical truth or not. If it is not a logical truth, select a false valuation.
(E ⊃ F) ∨ (F ⊃ E)

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. Determine whether the given proposition is a logical truth or not. If it is not a logical truth, select a false valuation.
(G ≡ H) ∨ (~G ≡ H)

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. Determine whether the given proposition is a logical truth or not. If it is not a logical truth, select a false valuation.
[(I ≡ J) • ~I] ⊃ ~J

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. Determine whether the given proposition is a logical truth or not. If it is not a logical truth, select a false valuation.
[(K ≡ L) • ~K] ≡ ~L

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. Determine whether the given proposition is a logical truth or not. If it is not a logical truth, select a false valuation.
[M ⊃ (N ∨ O)] ⊃ (M ⊃ N)

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. Determine whether the given proposition is a logical truth or not. If it is not a logical truth, select a false valuation.
[P ⊃ (Q • R)] ⊃ (P ⊃ Q)

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. Determine whether the given proposition is a logical truth or not. If it is not a logical truth, select a false valuation.
[S ⊃ (T ∨ U)] ⊃ (~T ⊃ U)

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. Determine whether the given proposition is a logical truth or not. If it is not a logical truth, select a false valuation.
[X ⊃ (Y ∨ Z)] ⊃ [(X ⊃ ~Y) ⊃ (X ⊃ Z)]

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