No cat has eight lives.
One cat has one more life than no cat.
Therefore, one cat has nine lives.
God is a bat
God is love
Love is blind
Bats are blind
Therefore, God is a bat
My dog is special
Some dogs are brown
My dog is brown
Therefore, my dog is some dog.
Puzzles
Sums and Products
There are two numbers not necessarily distinct. Mr. P knows the product
of the two numbers and Mr. S knows the sum of the two numbers. The following
dialogue ensues:
Mr. P 'I don't know what the two numbers are.'
Mr. S 'I know you don't know. I don't know what they are either.'
Mr. P 'Now I know what they are.'
Mr. S 'Now I know too.'
What are the numbers ?
Lions and Unicorns
There were once two beasts of the forest, a lion who always lied on Mondays,
Tuesdays and Wednesdays, but otherwise told the truth, and a unicorn who
always lied on Thursdays, Fridays and Saturdays, but otherwise told the
truth. A chance encounter between the two animals caused them to announce
in unison "Yesterday, I was lying!"
Which day was it?
Paradoxes
(1) There are three statements in this box.
(2) Exactly two statements in this box are false.
(3) 2 + 2 = 5
(1) is clearly true.
If (2) is true then since (1) is true (2) must be false. So (2) is false.
There are either 3, 2, 1, or 0 false statements in the box.
There are not 3 by 1.
There are not 2 by 2.
There are not 0 by 2.
Therefore by 3 - 6 there is 1 false statement in the box which must be
2.