The solution is 5/6 for sure
the possible outcomes after a blue is chosen are blue 1 1 0 black 0 1 2 and blue 2 0 0 black 0 1 2 prob of choosing a blue from 1st possibility = 1/3+1/6 prob of choosing a blue from 2nd possibility= 1/3 so totally there are 5/6 possibilities On Sun, Aug 7, 2011 at 3:05 PM, Kunal Yadav <kunalyada...@gmail.com> wrote: > Agree with puneet completely. After first blue pen, only possible outcomes > are blue or black and hence 1/2. > > > On Sat, Aug 6, 2011 at 12:28 AM, Puneet Goyal <puneetgoya...@gmail.com>wrote: > >> >> @shiv : you are considering the case when you need to know the probability >> of both pens being blue, but in the question you already know that 1st one >> is blue so you dont need to care about it, and also the 3rd packet getting >> eliminated coz of it increases the probability to 1/2 >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Algorithm Geeks" group. >> To post to this group, send email to algogeeks@googlegroups.com. >> To unsubscribe from this group, send email to >> algogeeks+unsubscr...@googlegroups.com. >> For more options, visit this group at >> http://groups.google.com/group/algogeeks?hl=en. >> > > > > -- > Regards > Kunal Yadav > (http://algoritmus.in/) > > -- > You received this message because you are subscribed to the Google Groups > "Algorithm Geeks" group. > To post to this group, send email to algogeeks@googlegroups.com. > To unsubscribe from this group, send email to > algogeeks+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/algogeeks?hl=en. > -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.
