Texas Hold Em Poker Rules Flush
The “4-2 Rule” is very simple to calculate at the table, and you should make a habit of doing it when faced with a tough decision.
Definition of Pot Odds
In order to use the “4-2 Rule,” you need to know what pot odds are. Pot odds are simply the ratio of the amount of money in the pot to the amount needed to call a bet. For example, if there is $100 in a pot and Player A bets $50, Player B is getting pot odds of 3-1 to call (100+50=150) (150/50=3).
Back to the above example, if Player B is faced with this bet on the flop with a flush draw (Player B has four suited cards and he needs one more suited card to make a flush) should he call the bet? Here is where the “4-2 Rule” comes into play.

