presently we are in alpha stage , incase of typos please report at http://thousandps.blogspot.com/2009/11/bugs.html.
we would be uploading all the 1000 Questions soon .
Monday, November 23, 2009
PS 173
A jar contains only x black balls and y white balls. One ball is drawn randomly from the jar and is not replaced. A second ball is then drawn randomly from the jar. What is the probability that the first ball drawn is black and the second ball drawn is white?
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