evo jos 2, sorry sto su na engleskom nije mi se dalo prevodit.
Title: Bags and Beads
You are given 5 bags. There are 10 beads in each of the bags. In four of the bags, the beads each weigh 10 grams. In the remaining bag, each bead weighs only 9 grams. All the bags and beads look and feal identical. You must find out which bag has the lighter beads. You can use a scale, but it has to be a single-tray scale, not a two-tray balance scale. Also, you may use the scale only once. After you place something on the scale it will get stuck so taking anything off or putting anything on will not be weighed. You cant tell the difference by picking them up, they will all feal the same. How can you find out which bag has the lighter beads?
Title: The Stairs of Death
Three people are standing on some stairs. They are each wearing a hat. They are only allowed to face forwards, so they cannot see the color of their own hat, only the color of the hat of the one or two people in front of them (depending in which position they are). The hats they are wearing have been chosen from a pile of two red hats and two blue hats. All three men will be shot in one minute unless one of them shouts out (correctly!) the colour of their own hat. Who shouts out and how do they know the color of their hat? (Work out the answer for the most difficult situation!
[img=http://img295.imageshack.us/img295/3742/stairspiczv7.th.gif]
ja sam ih rjesio u 5min (ste mislili da se necu hvalit
)