<body>


ineedahug.
honey, everyone does.

Navigations are at the top

ABOUT
I'm lost

LINKS
[Peggy] [Mavis] [karol] [lynn] [shijia]

TAG




bold italic underline link

Saturday, April 28, 2007
12:09 PM

Stats

Three light blubs are chosen at random from 15 bulbs of which 5 are defective. Find the probability that
  1. none are defective;
  2. exactly one is defective;
  3. at least one is defective.

who know how to slove?? pls enlighten me~!!!

to be continue~