Valid (Sound)

P1. All artists use paint.

P2. Vincent van Gogh uses paint.

C. Vincent van Gogh is an artist.

• Valid

• Invalid

P1. All artists drink coffee.

P2. Vincent van Gogh is an artist.

C. Vincent van Gogh drinks coffee.

• Valid

• Invalid

P1. All artists drink coffee.

P2. Vincent van Gogh is an artist.

C. Vincent van Gogh drinks coffee.

• Sound

• Unsound

P1. If everyone agrees with you , you are right.

P2. You are right.

C. Everyone agrees with you.

• Valid

• Invalid

P1. If everyone agrees with you , you are right.

P2. Everyone agrees with you.

C. You are right.

• Valid

• Invalid

P1. If everyone agrees with you , you are right.

P2. You are right.

C. Everyone agrees with you.

• Sound

• Unsound

P1: If I make a lot of money, then I will be happy.

P2: I won’t make a lot of money.

C: I won’t be happy.

• Valid

• Invalid

P1. If I am happy, then I smile.

P2. I am not smiling

C. I am not happy.

• Valid

• Invalid

P1. All philosophers speak German.

P2. Immanuel Kant speaks German.

C. Immanuel Kant is a philosopher.

• Valid

• Invalid

P1. Only philosophers speak German.

P2. Immanuel Kant speaks German.

C. Immanuel Kant is a philosopher.

• Valid

• Invalid