- Contemporary messages sorted: [ by date ] [ by thread ] [ by subject ] [ by author ] [ by messages with attachments ]

From: Chris Maltby <chris§sw.oz.au>

Date: Wed, 31 Aug 2005 15:24:07 +1000

Date: Wed, 31 Aug 2005 15:24:07 +1000

On Tue, Aug 30, 2005 at 05:07:59PM +1000, Jarrod Hollingworth wrote: > Umm, that's not the maths. Sure, if there were only 5 domains names > available and he was to get ALL of them your math is correct. The true > situation is that there were more available and he only nabbed a portion > (25%?) of them. > > ie. If 100 domain names were available and I was one of 100 applications for > each then the probability that I would get *a* domain name is 1 (100 x 1/100 > = 1), not 0.01 as per your calculations. The chance that I'd get the first 2 > would be 0.01 x 0.01 = 0.0001 but the chance that I'd get *any* two would be > 50%. Um... the probability of getting at least one is 1 minus the probability of getting none. That probability is (99/100)**100 or about 37%. So the probability of getting 1 or more for 100 applications for 100 names is (only) about 63%, not 100%.Received on Wed Aug 31 2005 - 05:24:07 UTC

*
This archive was generated by hypermail 2.3.0
: Fri Mar 06 2015 - 00:00:15 UTC
*