Sunday, October 4, 2009

Syllogisms

True Syllogisms

1. All people who are blind cannot see
Ray Charles is blind
Ray Charles cannot see

2. All birds have wings
A crow has wings
A crow is a bird

3. Dinosaurs are extinct
A T-Rex is a dinosaur
The T-Rex is extinct

4. All 16 year olds can get their permit
Bob is 16
Bob can get his permit

False Syllogisms

1. All things that walk are human
Tigers can walk
Tigers are humans
This is false because humans are not the only things that can walk

2. All football players are over 6 feet tall
I am a football player
I am over 6 feet tall
This is false because I am under six feet

3. All things that live in water are fish
Dolphins live in water
Dolphins are fish
This is false because not all things that live in water are fish

4. All humans believe in God
Atheists are humans
Atheists believe in God
This is false because there are humans who do no believe in God

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