Re: calculte probility
- From: matt271829-news@xxxxxxxxxxx
- Date: 14 Jul 2006 15:54:51 -0700
Bopar wrote:
i have 2 bag of n and m colored balls, can u tell me what is the
probility to pick upa 2 balls of the same color from bag 1 and bag 2 ?
Not unless you (i) specify how many balls of each colour are in each
bag, and (ii) explain the selection procedure (e.g. one ball is chosen
at random from each bag, or whatever it might be).
if i know there are X(=M+N) colors (N colors in bag 1, M in bag 2), any
better chances for me to pick up balls of the same color ?
What is the way to reason this ?
Is this supposed to be a new question or a clarification of the first
question? Whatever, it's impossible to answer without knowing how the
colours are distributed across the two bags, and how the selection is
to be made. Anyway, if there N (different) colours in bag 1, M
(different) colours in bag 2, and M + N (different) colours in total,
then there can't be any ball in bag 1 that is the same colour as any
ball in bag 2. So if you're choosing one ball at random from each bag
then the probability of getting two of the same colour is zero. I
assume this isn't what you meant.
Basically I think you need to explain the problem more clearly.
By the way, yes, it is my homework, I don't have any idea how to solve
it, thanks anyway
.
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