Archive for September, 2009

Penneys ante flow diagram

September 12, 2009
http://en.wikipedia.org/wiki/Walter_Penney

Here is a graph I made for this.  To make it a fair game, instead of flipping coins  until you reach a given state, throw 3 coins as one single event.

penny graph

the arrows mean: ‘beats this choice’

from wikipedia:

1st player’s choice 2nd player’s choice Odds in favour of 2nd player
HHH THH 7 to 1
HHT THH 3 to 1
HTH HHT 2 to 1
HTT HHT 2 to 1
THH TTH 2 to 1
THT TTH 2 to 1
TTH HTT 3 to 1
TTT HTT 7 to 1