I think 17/80 is wrong because if you say that while calculating the answer 3/5, you havent included the first 5 cases, then even after including it will only increase the probability of getting the biased coin in hand and thus increasing the overall probability of getting the heads and 17/80 is a way lesser than 3/5 although i am not sure about 3/5 even coz of the reasoning i just gave
also, when you are calculating 4/5*1/2^6 you are not getting any benefit out of the first five tosses, like, they must have gave you some positive response towards that yes, you will get the head even next time, but doing this you are actually decreasing the probability as compared to the one you could have get without those 5 cases On Mon, Aug 8, 2011 at 1:06 PM, Shachindra A C <sachindr...@gmail.com>wrote: > @brijesh > > *first five times* is mentioned intentionally to mislead i think. I vote > for 3/5. Moreover, 17/80 doesn't make sense also. Plz correct me if I am > wrong. > > > On Mon, Aug 8, 2011 at 12:06 PM, sumit gaur <sumitgau...@gmail.com> wrote: > >> (3/5) >> >> On Aug 7, 10:34 pm, Algo Lover <algolear...@gmail.com> wrote: >> > A bag contains 5 coins. Four of them are fair and one has heads on >> > both sides. You randomly pulled one coin from the bag and tossed it 5 >> > times, heads turned up all five times. What is the probability that >> > you toss next time, heads turns up. (All this time you don't know you >> > were tossing a fair coin or not). >> >> -- >> 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, > Shachindra A C > > -- > 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. > -- ----------------------------------------------------------------------- Puneet Goyal Student of B. Tech. III Year (Software Engineering) Delhi Technological University, Delhi ----------------------------------------------------------------------- -- 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.
