Posted by **Katrina** on Tuesday, June 1, 2010 at 10:14pm.

A hat contains 20 names, 9 of which are females. If 8 names are randomly drawn from the hat, what is the probability that at least 6 male names are drawn??????

- Math -
**Reiny**, Tuesday, June 1, 2010 at 10:34pm
So we have 9 females and 11 males,

we are choosing 8

the number of cases you are interested in are:

at least 6 males ---->

6 males, 2 females + 7males, 1 female + 8 males

= C(11,6)C(9,2) + C(11,7)C(9,1) + C(11,8)

= 462(36) + 330(9) + 165

= 19767

number of way to choose 8 of 20 = C(20,8) = 125970

so prob (at least 6 men) = 19767/125970

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