It should state that you can only use the scales once otherwise you just test all the bags one at a time to find the heaviest.TexMex said:Here's a similar one.
You have 10 bags of identical looking gold coloured coins. There are 10 coins in each bag. One of the bags contains real gold coins, while the other nine bags each contain fakes. The fake coins each weigh 1 gram exactly, whereas the real gold coins weigh 1.01 grams. You have a very accurate scale that will measure to the nearest hundredth of a gram. You may only use the scale to weigh one bag of coins. How do you find a genuine coin?
jtaunton said:I guess that as he can see four black-labels, he knows that the sticker man is lying.
kendor said:It should state that you can only use the scales once otherwise you just test all the bags one at a time to find the heaviest.
there are four men, the governor is a man isn't he?petewood said:jtaunton said:I guess that as he can see four black-labels, he knows that the sticker man is lying.
What are you two talking about, there are only 3 men wearing stickers aren't there?
TexMex said:Each prisoner gets a sticky label put on his head.
The labels are numbered with the powers of two (ie. 1, 2, 4, 8, 16, 32, 64,128,256 etc..
Each bottle gets a sticky label starting from 1 through to 10000
looking at the binary representation of the bottle number you can decide which prisoners are forcefed doses of the bottle in question.
Once the poison has taken effect, you simply add up the values of the dead prisoners labels, to deduce the bottle number that is contaminated.
petewood said:jtaunton said:I guess that as he can see four black-labels, he knows that the sticker man is lying.
What are you two talking about, there are only 3 men wearing stickers aren't there?
Methinks that's "One foot in the grave"! Had no idea where to start with the maths one though!kendor said:What tv programme is this? GR304.8mmAVE
kendor said:Would you rather a crocodile attack you or an alligator?
kendor said:Name an ancient invention, which is still used in some parts of the world today, that allows people to see through walls.
What can this be?
What always weighs the same no matter how large it is?
What tv programme is this? GR304.8mmAVE
One for the mathmeticians: Given five zeroes, using any mathematical operations, can you make a total of 120?