YOu have a coin which is biased say 75%chance of heads. How do use this coin for an unbiased decision! (can it be done?)
1if "the first toss is head and second tail" or "both heads" then we take it as head.
Otherwise, we take it as tails.
Will it be correct?
62No it wont...
actually the first way will give a probability of p(1-p) + p2
second way will give a probability of (1-p)p + (1-p)2
These are not equal.
But one more hint.... you came so close to the answer and still did not get it correct. I feel bad.. I mean u are really really close!
1hmm... i see my mistake.. but from your solution and the way you have written it, i figured out the right answer :D
I hope i am right this time...
tail-head. We call tail
Head-tail. we call head.
But what do we do of the other tow cases i cant figure out.
I mean what if we get head-head. or tail-tail!
1wow, this was a pretty exciting question. New and unseen. I guess nishant bowled me with this one... Thanks buddy for this wonderful question. I will take it as one of the best i have ever seen.
For Vishal's doubt. You will retoss in the two cases! *H-H and T-T.
Simple :)
Wow i cant still stop praising this question!
62Bingo vishal and vyom. Nice to know that u loved this question :)
1this is a good question indeed :)
i was thiking and thinking and could not think