99 will survive for sure.

>>The answer is - only one. The last one should say the color of the hat the sage before him not his. If he is lucky and has the hat of the same color than nobody would be killed.
>>
>Hi Sergey,
>
>Only one could be killed or only one would survive? It's not clear from your answer. Anyway, your solution is incorrect.
>
>If you can relax for a moment, you'll find it.
>