When I first started playing poker, everything was about the odds. I played limit ring a lot and needed to know if certain calls were justified. My first poker book listed all those "drawing"odds in a neat little chart that I copied and taped to the side of my computer monitor. It stayed there until I memorized those numbers and hard coded them into my brain. When I started playing a lot more NL ring, those numbers helped me to make good decisions quickly. Below is a copy of that chart with some explanations.
|Odds w/2 cards||Odds w/1 cards||Examples|
|21||70.1%||45.7%||Open end str8 flush draw with 2 overs|
|15||54.1%||32.6%||Open end str8 flush draw|
|12||45.0%||26.1%||Flush draw with one over|
|10||38.4%||21.7%||Flopped set, missed turn, need FH|
|8||31.5%||17.4%||Open end Str8 draw or double gut|
|7||27.8%||15.2%||Flopped a set, need a FH to win|
|5||20.4%||10.9%||Have a pr, need to pr your kicker|
|4||16.5%||8.7%||Inside (gutshot) straight draw|
|2||8.4%||4.3%||You have pp and need a set|
You also need some other numbers ‘hard-wired' about preflop odds for different types of starting hands. The odds of flopping a full house or other stronger hand are so low (.09% or less) as to be considered insignificant.
However the following stats are VERY significant.