On Mon, Aug 8, 2011 at 12:51 AM, aseem garg <[email protected]> wrote:
> @Shuaib: **What is the probability that you toss *next time, heads turns > up***. Well if you interpret it your way, then you are right. Otherwise, not. > > Aseem > > > > On Mon, Aug 8, 2011 at 1:19 AM, Shuaib Khan <[email protected]>wrote: > >> >> >> On Mon, Aug 8, 2011 at 12:47 AM, aseem garg <[email protected]> wrote: >> >>> Think it like this. I have tossed a coin 5 times and it showed heads all >>> the times. What is the probabilty of it shoing a HEADS now? >>> Aseem >>> >> >> Well you are thinking about it the wrong way. Question asks that what is >> the probability that heads will show up the first five times, plus a sixth >> time. Not just the sixth time. The first five times head showing up is part >> of the question. >> >> >> >>> >>> >>> >>> On Mon, Aug 8, 2011 at 1:12 AM, Shuaib Khan <[email protected]>wrote: >>> >>>> >>>> >>>> On Mon, Aug 8, 2011 at 12:40 AM, Puneet Gautam <[email protected] >>>> > wrote: >>>> >>>>> Sixth toss is independent of previous tosses and dependent only on >>>>> coin selection...! >>>>> >>>>> 1/5 + 4/5(1/2)= 3/5 >>>>> >>>>> is the correct answer.... >>>>> >>>>> we want to calc. probability of getting heads the sixth time only.... >>>>> even if it would have been 100 th time...3/5 would be the answer >>>>> only.. >>>>> >>>>> >>>> It is not independent. Re read the question. The first five times, it >>>> HAS to be heads. >>>> >>>>> >>>>> On 8/8/11, Prakash D <[email protected]> wrote: >>>>> > 1.) coin is fair >>>>> > 2.) coin is unfair >>>>> > >>>>> > P(head) for unfair coin= 1/5 * 1= 1/5 >>>>> > P(head) for fair coin= 4/5* 1/2 = 2/5 >>>>> > >>>>> > >>>>> > the probability at any instant that the tossed coin is a head is 3/5 >>>>> > >>>>> > 17/80 is the probability to get head at all the six times. >>>>> > >>>>> > the soln. for this problem will be 3/5 >>>>> > >>>>> > On Mon, Aug 8, 2011 at 12:45 AM, aseem garg <[email protected]> >>>>> wrote: >>>>> > >>>>> >> If the coin is unbiased then probability of heads: 1/2 irrespective >>>>> of >>>>> >> whether it is first time or nth time. So answer should be 3/5. >>>>> >> Aseem >>>>> >> >>>>> >> >>>>> >> >>>>> >> On Mon, Aug 8, 2011 at 12:39 AM, saurabh chhabra >>>>> >> <[email protected]>wrote: >>>>> >> >>>>> >>> Even u dont get why u people are gettin 17/80...the probability >>>>> that >>>>> >>> it will be a head 6th time will be same as the frst time...so it >>>>> shud >>>>> >>> be 3/5... >>>>> >>> >>>>> >>> On Aug 7, 11:05 pm, Kunal Yadav <[email protected]> wrote: >>>>> >>> > @algo: We can get head in two cases:- >>>>> >>> > >>>>> >>> > 1.) coin is biases >>>>> >>> > 2.) coin is not biased >>>>> >>> > >>>>> >>> > P(head) for biased= 1/5 *1*1*1*1*1*1= 1/5 >>>>> >>> > P(head) for unbiased= 4/5*(1/2)^6 >>>>> >>> > hence combined probability is what nitish has already mentioned. >>>>> Hope >>>>> >>> you >>>>> >>> > get the point. >>>>> >>> > >>>>> >>> > >>>>> >>> > >>>>> >>> > >>>>> >>> > >>>>> >>> > >>>>> >>> > >>>>> >>> > >>>>> >>> > >>>>> >>> > On Sun, Aug 7, 2011 at 11:29 PM, Algo Lover < >>>>> [email protected]> >>>>> >>> wrote: >>>>> >>> > > Can anyone explain the approach how to solve this . >>>>> >>> > > I think all tosses are independent so it should be 3/5. why is >>>>> this >>>>> >>> in- >>>>> >>> > > correct >>>>> >>> > >>>>> >>> > > On Aug 7, 10:55 pm, saurabh chhabra <[email protected]> >>>>> wrote: >>>>> >>> > > > sry...its wrong >>>>> >>> > >>>>> >>> > > > On Aug 7, 10:34 pm, Algo Lover <[email protected]> >>>>> 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 >>>>> [email protected]. >>>>> >>> > > To unsubscribe from this group, send email to >>>>> >>> > > [email protected]. >>>>> >>> > > 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 [email protected]. >>>>> >>> To unsubscribe from this group, send email to >>>>> >>> [email protected]. >>>>> >>> 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 [email protected]. >>>>> >> To unsubscribe from this group, send email to >>>>> >> [email protected]. >>>>> >> 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 [email protected]. >>>>> > To unsubscribe from this group, send email to >>>>> > [email protected]. >>>>> > 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 [email protected]. >>>>> To unsubscribe from this group, send email to >>>>> [email protected]. >>>>> For more options, visit this group at >>>>> http://groups.google.com/group/algogeeks?hl=en. >>>>> >>>>> >>>> >>>> >>>> -- >>>> Shuaib >>>> http://www.bytehood.com >>>> http://twitter.com/ShuaibKhan >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Algorithm Geeks" group. >>>> To post to this group, send email to [email protected]. >>>> To unsubscribe from this group, send email to >>>> [email protected]. >>>> 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 [email protected]. >>> To unsubscribe from this group, send email to >>> [email protected]. >>> For more options, visit this group at >>> http://groups.google.com/group/algogeeks?hl=en. >>> >> >> >> >> -- >> Shuaib >> http://www.bytehood.com >> http://twitter.com/ShuaibKhan >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Algorithm Geeks" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]. >> 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 [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/algogeeks?hl=en. > -- Shuaib http://www.bytehood.com http://twitter.com/ShuaibKhan -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. 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