Your chance of drawing 12 white balls consecutively without drawing a single red ball is about 1 in 15,879,054.
Odds_of_success = 1 / [ ((68-0)/(254-0)) * ((68-1)/(254-1)) * ... * ((68-(n-1))/(254-(n-1)) ] ; where n=12 samples. _jim -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Veech Sent: Thursday, July 20, 2006 1:35 PM To: The Hardware List Subject: [H] Odds calculator I need to figure out the odds, or probability, of something happening. Say there are 254 ping pong balls are mixed in a bag where 68 of them are red and the other 186 are white. So, 27% of the balls are red. Someone who is blindfolded reaches into the bag twelve times and selects one ping pong ball each time. What are the odds that all 12 ping-pong balls will be white? can anyone point me to an odds/probability calculator that will help me establish the percentages on this? Or is anyone adept at this type of calculation that can answer this question? thanks