Tommie Hu$tle
Member
Anyone?
a puzzle;
(space)= - or .
fccjgbfcg egjgbeebbibeejgbgfcghg egbiaabbgdeie jfcc eiejgb bibijgbgfc
a puzzle;
(space)= - or .
fccjgbfcg egjgbeebbibeejgbgfcghg egbiaabbgdeie jfcc eiejgb bibijgbgfc
quadriplegicjon said:what ? ?
Tommie Hu$tle said:Anyone?
a puzzle;
(space)= - or .
fccjgbfcg egjgbeebbibeejgbgfcghg egbiaabbgdeie jfcc eiejgb bibijgbgfc
Tommie Hu$tle said:That gives us
522961523 - 4696144118144961652676 - 4618001163484 - 9522 - 484961 - 1818961652
or
522961523 . 4696144118144961652676 . 4618001163484 . 9522 . 484961 . 1818961652
slayn said:maybe it somehow reduces to an ip? =\
mrkgoo said:As a side puzzle, my brother once sent me this puzzle claiming that Einstein couldn't solve it or something. I didn't believe him, since I solved it (and I'm definitely no Einstein):
The Penny Puzzle.
You have twelve pennies and a set of scales. One of the pennies is a 'bad' penny and is a different weight to the other pennies. What is the least number of weighs (uses of the scales) required to determine which penny is the 'bad' penny (and whether it is heavier or lighter)?
Short answer:I believe it's 3, but the REAL puzzle is whether you can figure out how it is done!
Azih said:not too difficult, but maybe cause you do crap like this (searches) all the time in Comp Sci. Step 1. make two batches of six, weigh em. The bad penny is in the heavier one
Step 2. seperate bad penny bunch into two piles of 3. Weigh em. Bad penny is in the heavier one
Step 3. Choose any two of the remaining 3, if they don't weigh the same you've found the penny, if they do weigh the same then the penny you didn't weigh is the bad one.
quadriplegicjon said:how do you know that bad penny is the heavier one? he said it could be heavier or lighter
JC10001 said:12 pennies.... split them into two stacks of 6 pennies each (stack 1 and stack 2).
Split stack 1 into two 3 penny stacks (stack 3 and stack 4).
Weigh stack 3 and stack 4.
If stack 3 and stack 4 weigh the same amount then you know the bad penny is in stack 2. Otherwise the bad penny was in stack 1.
Split the bad stack into 3 stacks of 2 pennies each (stack A, B, & C).
Weight stack A & B. If they weigh the same the bad penny is in stack C. If they don't weigh the same then weigh stacks A & C. If stacks A & C weigh the same the bad penny is in stack B. If they don't the bad penny is in stack A.
Choose 1 penny at random from stack A, B, or C (whichever stack had the bad penny). Weigh it against any other penny besides the one it was paired with. If it weighs the same then the penny you didn't choose is the bad penny. If it weighs more or less then the penny you chose is the bad penny.
At most it should take a total of 4 weighs on the scale to find the bad penny.
In that case, lets say its heavier.mrkgoo said:That's good...but it still might take 4 weighs... I'm pretty sure my answer gets it in 3 weighs, regardless, and you Know whether the bad penny is heavier or lighter.
alejob said:In that case, lets say its heavier.
Divide in 3 stacks of 4. Weigh two of them, the heavier stack will have the heavy penny, if they weigh the same the remaining stack has the heavy penny. Now divide stack in two, weigh stacks and heavier stack has heavy penny. Weigh last 2 remaining pennies to see which one is heavier.
somnific said:bad penny puzzle, does it go something like this?
divide into 3 stacks.
t1=[s1, s2, s3, s4] t2=[s5, s6, s7, s8] t3=[s9, s10, s11, s12]
then weigh.
if t1= t2
make u1=[s1, s9] u2=[s10, s11]
if u1 = u2 then s12 is the "bad" penny.
of course this formula differs depending on what the initial t1 and t2 weighing are. if one is greater or less then the other then your second weighing would consist of something like:
u1=[s1, s2, s5] u2=[s3, c6, c12]
which then would determine what the final two pennies you would weigh. and i don't want to type out those combinations
man, that sounds confusing.
somnific said:bad penny puzzle, does it go something like this?
divide into 3 stacks.
t1=[s1, s2, s3, s4] t2=[s5, s6, s7, s8] t3=[s9, s10, s11, s12]
then weigh.
if t1= t2
make u1=[s1, s9] u2=[s10, s11]
if u1 = u2 then s12 is the "bad" penny.
of course this formula differs depending on what the initial t1 and t2 weighing are. if one is greater or less then the other then your second weighing would consist of something like:
u1=[s1, s2, s5] u2=[s3, c6, c12]
which then would determine what the final two pennies you would weigh. and i don't want to type out those combinations
man, that sounds confusing.