Attention mathematical geniuses...part II

What are the odds of having a set in 3 cards? How about 4?
Conquer Club, a free online multiplayer variation of a popular world domination board game.
http://www.tools.conquerclub.com/forum/
http://www.tools.conquerclub.com/forum/viewtopic.php?f=6&t=18201
Georgerx7di wrote:Yes, he's absolutely right. 1/3 change with 3 cards. 2/3 with 4, and 3/3 or 100% with 5. Also, if two players have 3 cards, the chances that at least one of them has a set is 5/9 or 55.555%. This is a little harder to calculate, but if you think of the nine possibilities it makes sense. I hope I don't have to post again to show the math. Also, the odds of both having a set would obviously be 1/9.
Georgerx7di wrote:Yes, he's absolutely right. 1/3 change with 3 cards. 2/3 with 4, and 3/3 or 100% with 5. Also, if two players have 3 cards, the chances that at least one of them has a set is 5/9 or 55.555%. This is a little harder to calculate, but if you think of the nine possibilities it makes sense. I hope I don't have to post again to show the math. Also, the odds of both having a set would obviously be 1/9.
Georgerx7di wrote:Yes, he's absolutely right. 1/3 change with 3 cards. 2/3 with 4, and 3/3 or 100% with 5. Also, if two players have 3 cards, the chances that at least one of them has a set is 5/9 or 55.555%. This is a little harder to calculate, but if you think of the nine possibilities it makes sense. I hope I don't have to post again to show the math. Also, the odds of both having a set would obviously be 1/9.
the liquidator wrote:What are the odds of having a set in 3 cards? How about 4?
tahitiwahini wrote:the liquidator wrote:What are the odds of having a set in 3 cards? How about 4?
This subject is discussed at length here, you may be interested.
The discussion eventually led to the Estimated Armies from Cards calculation that's currently available in stocksr's greasemonkey script which I again highly recommend (get it from the Utilities and Plug-ins for Conquer Club thread at the top of this forum).