Bench Press for your Brain

Josh · Post by **Josh** » Sun Jan 02, 2005 12:29 am

Wingy can take this one, because I am not very good at making the questions (nor am I good at answering

/blum.gif\' class=\'bbc_emoticon\' alt=\':P\' /> haha)

Wingx · Post by **Wingx** » Sat Jan 08, 2005 10:49 am

I have six pairs of white socks and six pairs of blue socks in my drawer. In complete darkness, how many socks must I take from the drawer in order to be sure I get a pair that match?

soz for the late reply, but i couldn't get on the forum

FlyingDoggyJake · Post by **FlyingDoggyJake** » Mon Jan 10, 2005 4:03 am

how about three?
The first two could be different colors, but if that\'s the case the third one MUST match one of the two colors.
Is that correct?

Rift · Post by **Rift** » Mon Jan 10, 2005 5:37 am

i think your right jake, even if the first two werent two dif colours, then they'd have to be the same:P

FlyingDoggyJake · Post by **FlyingDoggyJake** » Mon Jan 10, 2005 6:56 am

Okay, well assuming that is correct (my apologies if there\'s some trick part of the question I\'m missing), I\'ll put up another one:

[b]There are seven coins which look identical. One of the seven coins weighs slightly less than the other six. Using a balance scale, how could you determine which is the light coin in just two weighings?[/b]

Wingx · Post by **Wingx** » Mon Jan 10, 2005 11:44 am

good doggy

/happy.gif\' class=\'bbc_emoticon\' alt=\'^_^\' />

ner0 · Post by **ner0** » Mon Jan 10, 2005 5:59 pm

my guess is:

put 3 on each side of the scale (obviously one left out)

if at this stage they balance out, then the one left out is the lightest...

if one side topples, whichever side is the lightest (obviously the one which is above the other)

take 2 coins from that side (2 of the three coins), and put them on opposite ends of the scale

if the scales balance, then the one you left out of this last weighing is the lightest...

if they tip, then the lightest (highest) is your lightest

- meh

Post by **Jim** » Mon Jan 10, 2005 6:45 pm

:\ dang, you lost me on that one the first time through, had to read it again...seems right.

FlyingDoggyJake · Post by **FlyingDoggyJake** » Mon Jan 10, 2005 6:46 pm

Way to go ner0, that is correct!

/smile.gif\' class=\'bbc_emoticon\' alt=\':)\' /> .... looks like it\'s time for a ner0 brain teaser.

ner0 · Post by **ner0** » Fri Jan 14, 2005 2:11 pm

meh I can\'t think of anything

/blush.gif\' class=\'bbc_emoticon\' alt=\'(blush)\' />

feel free to add your own anyone