Quote:
Originally Posted by Zirikk
Old riddle (may be too easy):
You're in a room and there is a door into another room and three light switches beside the door. There are three lamps in the other room which can be turned on using the switches in the first room. How do you figure out which switch controls which lamp? You can open the door only once and you can't touch the switches after that.
(also you don't see any light when the door is closed, and you can't touch the wiring)
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Turn two switches on, wait for 15 minutes, turn one off, go inside. The turned on lamp corresponds to the turned on switch. Touch the two turned off bulbs, the warm one is the switch you just turned off.
Quote:
Originally Posted by Zirikk
You're on a game show, and you're given the choice of three doors. Behind one door there is a car. And there is a goat behind the other two doors. You pick a door, and the host, who knows what's behind the doors, opens another door, which has a goat. He then says you can switch your choise. Is it to your advantage to switch your choice?
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Monty hall, if you switch your chance is 2/3