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1000 Milk Jars - Page 3

Blogs > Slithe
Post a Reply
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Folca
Profile Blog Joined October 2006
2235 Posts
May 16 2008 21:09 GMT
#41
boring
Dea : one time when he was playing vs the comps he asked me "how do I make that flying unit that makes the other stuff invisible" and I reply "ur playing terran zomg"
HamerD
Profile Blog Joined January 2008
United Kingdom1922 Posts
May 16 2008 21:13 GMT
#42
Well I thought it was super cool and it made me wish I knew all these special and cool maths answers because then, probably, I would score with all the hot chicks.
"Oh no, we've drawn Judge Schneider" "Is that bad?" "Well, he's had it in for me ever since I kinda ran over his dog" "You did?" "Yeah...if you replace the word *kinda* with *repeatedly*...and the word *dog* with son"
Elvin_vn
Profile Blog Joined March 2004
Vietnam2038 Posts
Last Edited: 2008-05-16 21:14:50
May 16 2008 21:14 GMT
#43
+ Show Spoiler +
now let's replace poison milks with aids chicks
do not agrue with idiots, they will pull you down to their level and beat you with their experiences
Slayer91
Profile Joined February 2006
Ireland23335 Posts
Last Edited: 2008-05-16 21:34:54
May 16 2008 21:15 GMT
#44
From the top of my head
+ Show Spoiler +

100 jars

10 x 10 would be
12345678910
11xxxxxxxxx
12xxxxxxxxx
13xxxxxxxxx
14xxxxxxxxx
15xxxxxxxxx
16xxxxxxxxx
17xxxxxxxxx
18xxxxxxxxx
19xxxxxxxxx
20xxxxxxxxx
So each rat would drink 10, but if one got sick you could tell from the way the other rats who drank the same column/row..
So if you did the same with 100 x 10 it would make 110 rats.


EDIT: Sqrt of 1000 ~=32 so if you manage a 32 x 32 grid and you have 64 rats. ?

Gandalf
Profile Joined August 2004
Pakistan1905 Posts
Last Edited: 2008-05-16 21:41:48
May 16 2008 21:29 GMT
#45
nvm my solution si wrong, I forgot the time it takes for the poison to work. My math knowledge is rudimentary, but I think you could create overlapping mixtures, feed them to the rats, and find out which jar it is in one go.

eg with 3 jars, you could create mixtures 12, 23, 13, and feed each to 3 rats. Based on which rats die, the culprit should be identifiable.

Slayer91
Profile Joined February 2006
Ireland23335 Posts
May 16 2008 21:36 GMT
#46
On May 17 2008 06:29 Gandalf wrote:
11 rats

+ Show Spoiler +


split the jars into two groups of 500. mix a small amount of milk from every jar in each group to form a mixture that represents each group, and feed it to two rats. One rat will die and eliminate 500 jars. Then divide the remaining 500 into two groups of 250 and so on.

The rat that doesnt die gets recycled for the next cycle. So we have:

first two rats: 500 jars left
one more rat: 250 left
one more rat: 125 left
one more rat: 63 left
one more rat: 32 left
one more rat: 16 left
one more rat: 8 left
one more rat: 4 left
one more rat: 2 left
one more rat: jar is identified, one rat stays alive, 11 used in all




Does that work with the time limit? It takes 2-3 hours for the poison to work you have 3 hours.
Luddite
Profile Blog Joined April 2007
United States2315 Posts
May 16 2008 22:19 GMT
#47
this is a very clever puzzle. My first thought was also "oh it must be like those weighing problems where you have to keep dividing in half 10 times" so 10, but I couldn't think of any way to make it work, so all i could think of was 999. I'm glad elements explained it so well.
Can't believe I'm still here playing this same game
xmShake
Profile Blog Joined February 2007
United States1100 Posts
May 16 2008 22:19 GMT
#48
Fuck the rats, just get one of your friends to drink a small sip of each milk jar until he finds one that tastes funny. Problem solved.
fusionsdf
Profile Blog Joined June 2006
Canada15390 Posts
May 16 2008 23:07 GMT
#49
On May 17 2008 05:12 travis wrote:
Show nested quote +
On May 17 2008 04:26 fusionsdf wrote:
On May 17 2008 03:25 travis wrote:
On May 17 2008 03:23 Elements wrote:
On May 17 2008 03:19 travis wrote:
On May 17 2008 03:17 Elements wrote:
+ Show Spoiler +
log2(1000) rounded up equals 10 rats.

Each milk is fed to a unique subset of the rats, depending on which subset dies, then you know the milk it came from was poisoned. With 10 rats, there are 2^10 = 1024 different subsets, which is enough.


you have a time limit.

(even though i think this answer is what he wanted the correct answer to the riddle to be, he just made the time limit wrong )


The time limit is no problem, you do it simultanously.
An example might be better:
+ Show Spoiler +
with 4 jars and 2 rats,
rat 1 drinks jar 2 and 4
rat 2 drinks jar 3 and 4

two hours later...

if no rats die, it was jar 1
if only rat 1 dies, it was jar 2
if only rat 2 dies, it was jar 3
if both rat 1 and rat 2 die, it was jar 4



yes but u have to wait 2 hours so by the time u get it narrowed down to less jars, you have no time let to do a second wave of experiments


you dont do a second round :O

you just use exceptions

if you have 2 rats and feed them like so:
rat 1 - jar 2 and 3
rat 2 - jar 3 and 4

if no rats die (and one of those 4 jars has to have poison) then jar 1 (the one not used) was the poison.

if jar 2 is poison, only rat 1 will die

if jar 3 is poison rat 1 and 2 will both die

if jar 4 is poison only rat 2 will die


I think its something like that, but on a larger scale


ur like 80 years late


yeah well Im like 600 years awesome
SKT_Best: "I actually chose Protoss because it was so hard for me to defeat Protoss as a Terran. When I first started Brood War, my main race was Terran."
Day[9]
Profile Blog Joined April 2003
United States7366 Posts
May 17 2008 00:28 GMT
#50
log(n) where n is the number of poisoned bottles

Whenever I encounter some little hitch, or some of my orbs get out of orbit, nothing pleases me so much as to make the crooked straight and crush down uneven places. www.day9.tv
Cascade
Profile Blog Joined March 2006
Australia5405 Posts
May 17 2008 00:37 GMT
#51
ahh, sweet problem! Me like.

A better formulation may have been that you are allowed to feed each rat only one bowl of milk (in which you then could mix), then you wouldnt have the confusion on the instantaneous milk-mixing.

And cuter things like bunnies wouldnt work very well, since people would just find a safe sort of milk and keep feeding the bunnies (from the infinite amount of milk) and cuddle with them.
H
Profile Blog Joined July 2007
New Zealand6138 Posts
May 17 2008 00:41 GMT
#52
I send my infinite army of rats to take over the world.
[iHs]HCO | のヮの | pachi & plexa ownz | RIP _
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