View Single Post
Old 2005 June 12th, 07:21 AM   #5 (permalink)
samy_dg
Somebody Stop Me !!
 
samy_dg's Avatar
 
Join Date: May 2005
Location: Waterloo, ON, Canada
Posts: 1,220
samy_dg is a TestMagic guru. Show your respect!samy_dg is a TestMagic guru. Show your respect!
Re: one probability question

Required probability
=(Probability that 1st bottle is chosen & ball is red)+(Probability that 2nd bottle is chosen & ball is red)
=(1/2)X(1/3)+(1/2)X(1)
=2/3.
_ _ _ _ SIG _ _ _ _
Nothing's impossible.
______________________________________
samy_dg is offline   Reply With Quote