- $Charlie$ : Both of you have choosen a positive integer and one of them is $2$ more than the other.
- $Alice$ : I don't know $Bob$'s number.
- $Bob$ : I don't know your number either. Do you know now?
- $Alice$ : I still have no idea. Do you?
- $Bob$ : Yes, I know now.
- $Alice$ : Then so do I.
Logical Puzzle that gives Headache
- Anindya Biswas
- Posts:264
- Joined:Fri Oct 02, 2020 8:51 pm
- Location:Magura, Bangladesh
- Contact:
$Alice$ and $Bob$ both choosed a secret number and secretly tells the numbers to $Charlie$. Then they had the following conversations between them (which is not secret) :
"If people do not believe that mathematics is simple, it is only because they do not realize how complicated life is."
— John von Neumann
— John von Neumann