Hosted by The Math Forum## Problem of the Week 1244## Going for Gold
Charlie has 64 identical-looking gold-colored coins; all are counterfeit except one.
He calls Alice into his office and seats her at a table containing an Bob enters and is seated in the same position, facing the board. He may take one of the coins. Find a joint strategy that allows Bob to select the gold coin. As usual, Alice and Bob know the protocol in advance and can plan a strategy, but cannot communicate after Alice enters the room.
Extension: The problem above shows that
How large is C(2)? That is, still with the Source: Heard from Paul Cuff, though this is probably an old folklore problem. Source: Dan Velleman (Amherst College) |

[**Privacy Policy**]
[**Terms of Use**]

Home || The Math Library || Quick Reference || Search || Help

http://mathforum.org/

5 July 2017