Originally Posted by bioguy
3 switches: a, b and c.
Assuming that the light is off:
Turn a on
wait 10 minutes
Turn a off and b on.
Open the door.
If the light is on, switch b controls.
If light is off, either switch a or c.
Hot bulb means switch a. Cold means switch c.
If the bulb was on when you started.:
light off means B controls.
light on means either A or C
If it is C, the bulb was not off for long and should feel very hot.
If it is A, the bulb was off for 10 minutes and should feel cool.
I don't know how to solve it if we don't know the initial state of the bulb.
Holy cow - Wow!
Is what I say now
You answered the question twice
And probably could have done differently thrice
Bioguy I haven't been lately around much
Missed many riddles, I have lost the touch
Forgive me I don't know you or whether you've been contributing
But your answer has my mind stimuliting
My mind is like a sponge that soaks up and then dumps
You ought to see my nice looking wife in pumps! (okay, corny)
Thank God LabRatBrewer still plays
And makes minds work in mysterious ways
LRB here's what I see
You are a genius and I gotta go pee.. [sounds like an Ischavio line
Bioguy look forward to more of your rhymes
And answers to riddles that are quite sublime.
for keeping this thread going on, endlessly...