I have this statistics problem that i must solve as soon as possible.

You have 5 oil paints and 6 water paints. The director of the museum picks an exhibition of 3 oil paints and 4 water paints. How many are the probabilities there are to form the exhibiton.

I will really apprecciate your help
Thanks again
Tik

2. Hi Tik,

Welcome to TS. This is a hypergeometric probability. There are two kinds of paints. You are picking 7 out of 11 in total, 3 of them needs to be oil based. Thus we have:

P = C(5,3)*C(6,4)/C(11,7)

where C(n,m) stands for n choose m.

3. Tik, Jin,

Are we looking for a probability distribution here, or do we need to just find the number of possible exhibitions?

If it's just the number, then the answer is slightly different, and is just

C(5,3)*C(6,4) = 150 different possible exhibitions

4. Originally Posted by tik
How many are the probabilities there are to form the exhibiton.
Should be either "What is the probability of ..." or "How many possible ways..."

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