If I put nine pieces of paper, with a digit from 1-9 written on each one, into a hat, and pull 3 out without replacement, what is the likelihood that I will select three numbers that result in a winning tic-tac-toe?

 1 | 2 | 3 
---+---+---
 4 | 5 | 6 
---+---+---
 7 | 8 | 9 

The required probability that the individual  will select three numbers that result in a winning tic-tac-toe is approximately  0.095238

Edited on March 5, 2008, 2:38 pm

Posted by K Sengupta on 2008-03-05 14:37:24