There are several different kinds of magic numbers. The digital root and magic constant are sometimes known as magic numbers.
In baseball, the magic number for a team in first place in a division is the number of games that team must win or the second place team must lose in order to clinch the division. The formula is
For example, the standings for the National League Central Division as of August 9, 2004 are summarized in the following table.
team | wins | losses |
St. Louis | 72 | 38 |
Chicago | 61 | 50 |
Houston | 55 | 56 |
Cincinnati | 54 | 57 |
Milwaukee | 52 | 58 |
Pittsburgh | 51 | 58 |
There were 162 games in the season so, for example, St. Louis's magic number on that date was