In his book "The poker face of Wall Street", A.Brown wrote this:

"If two hands have two different cards ten or higher, there is a 62% chance they share a card of the same rank.

If two hands are pairs or suited connectors, there is only a 7% probability they share a card of the same rank.

If they are both suited hands, there is only a 19% chance they share the same suit."

How did he find these numbers?

  • 1
    Really the book repeats the % every time? – paparazzo Feb 29 '16 at 21:20
  • @Frisbee Fixed. – Toby Booth Mar 2 '16 at 16:48

One question at a time

Using combinations

One hand is suited

How many other suited hands of that suit
11c2 = 55

How many suited hands not of the suit
13c2 * 3 = 234

Chance of same = 55 / (55 + 234) = 19%

I don't get the purpose those stats.
I cannot think when I would use any of them.

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