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UK Floor Cleaning Forum => Carpet Cleaning Forum => Topic started by: dan roberts on April 25, 2008, 11:12:09 pm

Title: 50 Black socks, 50 white.
Post by: dan roberts on April 25, 2008, 11:12:09 pm

OK, question, if you have a bag with fifty black socks, and fifty white socks in it, whats the maximum amount of socks you have to pull out to GUARANTEE a matching pair?

Happy Thinking

Dan

Title: Re: 50 Black socks, 50 white.
Post by: John Kelly on April 25, 2008, 11:46:07 pm

3

Title: Re: 50 Black socks, 50 white.
Post by: lands on April 26, 2008, 12:03:56 am

no the answer is 51

Title: Re: 50 Black socks, 50 white.
Post by: nick p on April 26, 2008, 12:04:23 am

51

Title: Re: 50 Black socks, 50 white.
Post by: Jason Hedges on April 26, 2008, 03:08:51 am

Hi Dan,

If you are lucky you only have to pull 2 socks out, you have 2 black or white socks. Or you have one of each, so on your third pull you will have a matching pair of socks. On you third pull you will have 2 black socks or 2 white socks. No one can dispute this answer it is mathematically correct. It took a thousand times longer to type the answer than it did for me to have the answer. Try me again!!

All the best,
Jason.

Title: Re: 50 Black socks, 50 white.
Post by: Doug Holloway on April 26, 2008, 08:07:43 am

Hi Guys

3

Cheers

Doug

Title: Re: 50 Black socks, 50 white.
Post by: carpet guy on April 26, 2008, 08:26:20 am

Perception...................what's a match ?  To most it's two of the same colour, but to my daughter, it's the first two she comes across, gets a kick out of being slightly wacky, fortunately, it only extends to socks and it's her harmless way of " not quite conforming "

I imagine the roulette players would immediately have answered 51.

Title: Re: 50 Black socks, 50 white.
Post by: Karl Wildey on April 26, 2008, 09:58:58 am

100,
it says what the max amount of socks to make a matching pair

Title: Re: 50 Black socks, 50 white.
Post by: Doug Holloway on April 26, 2008, 10:29:32 am

Hi Guys

Karl you read the question right but got the wrong answer.

I went for 3 which is the minnimum, the maximum is 51.

Cheers

Doug

Title: Re: 50 Black socks, 50 white.
Post by: dan roberts on April 27, 2008, 01:03:23 am

Well done those who said 3, as, yes its, 3. Jason Hedges answered it most comprehensively so a litre of Cillet Bang goes to him in the first class post....

So one pull gets u either a white or black, the next? could be an odd one of the one you've already pulled, BUT the third is guarenteed to match one or the other you previously took out the bag.

Anyway, its a good one.

Dan

Title: Re: 50 Black socks, 50 white.
Post by: Karl Wildey on April 27, 2008, 11:20:42 am

ok, read it wrong,