BrainKing - Foros de discusión (BrainKing.com)

Moderador: Hrqls

BrainKing.com

Board for everybody who is interested in BrainKing itself, its structure, features and future.

If you experience connection or speed problems with BrainKing, please visit Host Tracker and check "BrainKing.com" accessibility from various sites around the world. It may answer whether an issue is caused by BrainKing itself or your local network (or ISP provider).

World Of Chess And Variants (videos from BrainKing): YouTube
Chess blog: LookIntoChess.com

Lista de boletines

Modo: Todo el mundo puede escribir

Mostrar los mensajes más antiguos primero

4. Julio 2004, 23:28:06

Grim Reaper

mostrar mensajes de este usuario | enlace

Asunto: Re:

Modificado por Grim Reaper (4. Julio 2004, 23:35:14)

Except that the answer is wrong.

There are 13 of the same cards, disregarding suits.

The chances of 4 of the same being drawn by two people would be...

4 x (13x12x11x10/4x3x2) then divided by 2.

This is one in 5720.

Now, given that 4 cards have been removed, with 6 more to be dealt, with 3 matching pairs, the odds are:

{there are just 12 "different" cards now to start...}

4 x (12 x 12) x (11 x 11) x (10 x 10) =

6,969,600.

Multiply this by 5720 and you get:

39,866,112,000 to 1.