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Worksheets

Valid (Sound)

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

P1. All artists use paint.

P2. Vincent van Gogh uses paint.

C. Vincent van Gogh is an artist.

a)

Valid

b)

Invalid

2.

P1. All artists drink coffee.

P2. Vincent van Gogh is an artist.

C. Vincent van Gogh drinks coffee.

a)

Valid

b)

Invalid

3.

P1. All artists drink coffee.

P2. Vincent van Gogh is an artist.

C. Vincent van Gogh drinks coffee.

a)

Sound

b)

Unsound

4.

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

P2. You are right.

C. Everyone agrees with you.

a)

Valid

b)

Invalid

5.

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

P2. Everyone agrees with you.

C. You are right.

a)

Valid

b)

Invalid

6.

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

P2. You are right.

C. Everyone agrees with you.

a)

Sound

b)

Unsound

7.

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.

a)

Valid

b)

Invalid

8.

P1. If I am happy, then I smile.

P2. I am not smiling

C. I am not happy.

a)

Valid

b)

Invalid

9.

P1. All philosophers speak German.

P2. Immanuel Kant speaks German.

C. Immanuel Kant is a philosopher.

a)

Valid

b)

Invalid

10.

P1. Only philosophers speak German.

P2. Immanuel Kant speaks German.

C. Immanuel Kant is a philosopher.

a)

Valid

b)

Invalid

11.

P1. All philosophers speak German.

P2. Immanuel Kant speaks German.

C. Immanuel Kant is a philosopher.

a)

Sound

b)

Unsound

12.

P1. If you're a Utilitarian, then you think consequences are important.

P2. Jeremy Bentham thinks consequences are important.

C. Jeremy Bentham is a Utilitarian.

a)

Valid

b)

Invalid

13.

P1. If you're a Utilitarian, then you think consequences are important.

P2. John Stuart Mill is a Utilitarian.

C. John Stuart Mill thinks consequences are important.

a)

Valid

b)

Invalid

14.

P1. Everyone who is invisible breaks the law.

P2. Criminals break the law.

C. Criminals are invisible.

a)

Valid

b)

Invalid

15.

P1. Everyone who breaks the law is invisible.

P2. Criminals break the law.

C. Criminals are invisible.

a)

Valid

b)

Invalid

16.

P1. If you shout the loudest, you're the best.

P2. You're the best.

C. You shout the loudest.

a)

Valid

b)

Invalid

17.

P1. If winter turns to spring, I will flap my little wings.

P2. Winter has turned to spring.

C. I have flapped my little wings.

a)

Valid

b)

Invalid

18.

P1. If Bass Rock is a great place for my flock, then I will get the flu.

P2. I have the flu.

C. Bass Rock is a great place for my flock.

a)

Valid

b)

Invalid

19.

P1. If you play table tennis, you will breathe fire.

P2. You don't play table tennis.

C. You won't breathe fire.

a)

Valid

b)

Invalid

20.

P1. If you play table tennis, you will breathe fire.

P2. You don't breathe fire.

C. You don't play table tennis.

a)

Valid

b)

Invalid