Tue 24 Jun, 2008 09:46 am - Re: Log floating upstream
[quote="bellamar"]:cry: Anyone knows the answer to this riddle?
A log is floating upstream and comes to a fork, does it go to the right or the left ? Thanks... (view)
Tue 24 Jun, 2008 09:42 am - Yes, 4times I think the best approach.
[quote]I'd prefer to have four predetermined weighings with the solution strictly determined by the four outcomes, but I'll need to write a... (view)
Sat 21 Jun, 2008 07:40 pm - We have 8 marbles: 6 are same weight - say m , 1 is lighter - say (m - m0) , 1 is heavier - say (m + m0)
In how many times we use a balance scale (like old version) to figure which is which? (view)
