posted on April 27, 2001 07:27:06 PM new
Three guys walk into a hotel to rent a room for a party they are giving. Each guy chips in $10 to cover the cost of the room. They hand the guy at the desk the $30 and he proceeds to make change. Realizing that the room is only $25 normally, he figures he can give them back $1 each and they'll be happy, and he can pocket the other $2 as a tip.
What I can't figure out is this: If each guy initially paid $10, and got back $1 then (I'm not exactly a math genius) it seems to me that they only paid $9 each for the room. Now, 3 guys at $9 each is $27. Lets not forget the $2 tip that the guy behind the counter kept for himself. That's $29.
posted on April 27, 2001 07:47:50 PM new
Okay here's one...
a man is in a room (or woman...maybe a cat!)
Escape is necessary...but there are two doors. One leads to instant death, one to freedom and life.
Each door is guarded. One guard always lies. One guard always tells the truth.
You may only ask ONE question to one guard. His answer will help you escape.
Ask the wrong question. Toast.
Remember one guard always lies and one always tells the truth.
posted on April 27, 2001 08:39:56 PM new
I would ask guard #1 "What sex are you?" If he/she lied. I would then ask the other guard "Is it safe to walk through this door?" If guard #1 told the truth, I would ask the other guard "Will I die if I walk through your door?"
You said "You may only ask ONE question to one guard." That means we can ask the other guard a question also, right?
posted on April 28, 2001 07:11:39 AM new
Your right, good point. The guard could also be "Pat" from 'Saturday Night Live'. A real challenge there. Or, Pat Taylor?
posted on April 28, 2001 05:43:36 PM new
Ask the first guard " Are you a guard ?"
If the guard answers "yes", ask the other guard, which must be the liar, " Is this door safe to exit?". If he says no- it is your exit, if he answers "yes", go out the other door.
If the first guard answers "no" to the guard question, then ask the second guard, which must tell the truth, "Is it safe to exit this door?". If answered "yes", then it is the safe exit, if answered "no", then exit the liars door.
posted on April 30, 2001 08:14:16 PM new
You could ask either of the guards "If I asked the other guard which door is the safe door, what would he say?"
If you asked that of the guard that tells the truth, he'd truthfully tell you the ohters lie and point to the unsafe door.
If you asked that of the one that lies, he wouldn't tell you the truthful ones answer, he'd lie and point to the door that is unsafe.
Therefore, go out the opposite door from the one that you were told is safe.
