Drinking with prisoners
You are a prison guard and you are looking after 10 prisoners. There are n-1 bottles of grape juice and 1 bottle of vine. You have to determine which one is the bottle of vine. Here are the rules:
- You can't make it by drinking, smeling or other.
- If anyone drinks even a single drop of vine, he will wake up very drunk.
- You have only one night to discover.
*Prisoners can drink infinite amount of juice/vine, but you (guard) can't drink anything :)
Find the maximum n, so you can be sure which one is the bottle of vine.