Number each bottle 1-1,000. Under each base 10 number (that's just regular counting!), also write the number in binary (base 2). Line up your rats and allow them each to represent the digit of a binary number. Take each bottle of wine and feed it to those rats which represent a 1 in the binary representation of the bottle's label. For example, bottle four is 100 in binary, so the third rat will be feed the wine from that bottle. After all the wines are distributed, you can literally read the binary number from the rats that are dead after an hour. See exactly how this works in the video aboveāit's pretty incredible.

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