@Jai: C shoots at B and misses. Then B shoots at A and hits. Then C
and B have a shootout with C getting the first shot. C kills B with
probability 1/3 + 2/3 * 1/2 * 1/3 + (2/3 * 1/2)^2 * 1/3 + ... =
(1/3) / (1 - 2/3 * 1/3) = (1/3) / (2/3) = 1/2 because it is an
infinite geometric series. So your formula should be (2/3)*( (1/2 *
1/2 + 1/2 * 1/3) ) = 5/18.

Dave

On Jan 3, 11:04 am, jai gupta <[email protected]> wrote:
> @Dave: Sorry It was a typo but for the probability figures,
> When C shoots B then if he is successful then A will shoot C
> Hence he must be unsuccessful and then
> if B is unsuccessful then A must will Kill B and then C must kill A
> if B is successful then C must kill B now
> Hence P(when C shoots at B)=(2/3 )*( (1/2)*(1/3) + (1/2)*(1/3) )
> =2/9
>
> When C shoots at A i am similarly getting for the case when A is killed as
> 1/12
> and when A is safe as 5/18
> Hence total 13/36
>
> where am i wrong?

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