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March 4, 2015

March 4, 2015

Posted by **ophelia** on Thursday, March 24, 2011 at 1:09pm.

a. all three of the disks are defective

b. none of the three disks are defective

c. exactly one of the three disks is defective

d. at least one of the three disks works

- finite math -
**Reiny**, Thursday, March 24, 2011 at 1:22pmd - defective

g -good

a) prob(ddd) = (5/40)(4/39)(3/38) = ....

b) prob(ggg) = (35/40)(34/39)(33/38) = ....

c) prob(dgg) + prob(gdg) + prob(ggd) = 3(5/40)(35/39)(34/38) = ...

d) 1 - prob(ddd) = 1 - (35/40)(34/39)(33/38)

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