Re: Confirmation of Shannon's Mistake about Perfect Secrecy of One-time-pad

On 11月15日, 下午8时52分, matt271829-n...@xxxxxxxxxxx wrote:
On Nov 15, 1:57 am, wangyong <hell...@xxxxxxx> wrote:

---------you just asking, but do not state your question clear to
aviod express your mistake?

I asked you whether you think the stated probability can be
calculated. You replied "it can be calculated". Now you seem to be
saying that it *cannot* be calculated because the question is not
stated clearly enough.

Have you changed your mind?

To recap, my question is as follows. Please look at it again carefully
and tell me definitely whether the stated probability can or cannot be
calculated.

I have two coins, one red and one blue. Both are marked "0" on one
side and "1" on the other. The red coin is biased and comes up "0"
with probability p and "1" with probability 1-p. The blue coin is
fair: it comes up "0" with probability 1/2, and "1" with probability
1/2. I toss both coins. The red coin comes up with the number R. The
blue coin comes up with the number B. I calculate C = R Xor B, and I
find that C = 0. Given that C = 0, what is the probability that R =
0?



----i just think your All tricks have been exhausted.

There are no "tricks". Just simple questions that should be easy for
you to answer.

since i have answered, why you repeat it? it is obovious you fool me.
.

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