Request for you

[mario]

(10-15-2009 03:46 AM)Frank Wrote:  

(10-15-2009 03:19 AM)mario Wrote:  :
Frank, very interesting but you analyzed a pair or 2 from 2 and I analise 1 from 2 not all pair, only one number for it!! Where in this history of draws you must wait hundred of draws for a one good numbers from a pair???
So I think that probability is good? I'm wrong?

The maths you used told me that you were looking at the probability of not matching 2 from 7 balls ! hence HYPGEOMDIST(0,2,7,49) where 2 is the number of balls you are intersted in and 0 is your success rate you are looking for. Nothing in that function tells the maths about looking for one of a pair ! Thats why it is wrong.

Yes, but I calculate for contrarely process, which is the probability that if choose a pair and hit 0 in 4 consecutive draws! This is situation for lost and contrarely for a win that it mean at least one number for pair = 1-0.28=0.72 or 72%!

I think that it may be calculate in this mode starting with a contrarely phenomen. Do you think that?