[algogeeks] GSOC

2011-08-16 Thread saurabh chhabra
can anyone help me in preparing for GSOC(Summer of Code),2012?
Please give me a description of what exactly it is and what all we
need to know to get selected in it.
kindly throw some light.

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[algogeeks] Re: Probability Puzzle

2011-08-07 Thread saurabh chhabra
0.6?

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).

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[algogeeks] Re: Probability Puzzle

2011-08-07 Thread saurabh chhabra
sry...its wrong

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).

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[algogeeks] Re: Probability Puzzle

2011-08-07 Thread saurabh chhabra
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 kunalyada...@gmail.com 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 algolear...@gmail.com 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 saurabh131...@gmail.com wrote:
   sry...its wrong

   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).

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  Algorithm Geeks group.
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 --
 Regards
 Kunal Yadav
 (http://algoritmus.in/)

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