I have a bag containing the digits 0 through 9, and used six of them to stick two different three-digit perfect squares on the foreheads of Paul and George. Both Paul and George know this fact, but each one can see only the other's number.

I ask Paul, "How many of the digits remaining in my bag can you exactly tell me?"

Paul replies, "Three."

If I now ask the same question to George, what should he reply?

(In reply to Pallindromes by Sir Percivale)

The symbols aren't displaying properly in my last comment, it should read: ab squared = cdb while the square root of bdc=ba. I still cant get over this.

Posted by Percy on 2005-08-19 07:13:28