Three diners share a meal advertised at $30. At the end of the meal, each diner pays $10 to the waiter.

In fact, there is a $5 discount on the meal that day, but the crooked waiter announces that the discount is only $3. He then hands a dollar back to each of the three diners and pockets the remaining $2.

The three diners are none the wiser for the swindle, being happy enough to get a discount. So each diner paid $10 and got back a dollar, i.e., each diner paid $9. In total, they thus paid $27. The waiter took $2. That makes $29.

Where’s the missing dollar?

Achilles & the tortoise

The surprise exam

Newcomb’s problem

Newcomb’s problem (sassy version)

Seeing and being

Logic test!

Philosophers say the strangest things

Favourite puzzles

Books on consciousness

Philosophy videos

Phinteresting

Philosopher biographies

Philosopher birthdays

Draft

barang 2009-2017