R.J.Bell of Pregame.com says the number of possibilities to guarantee a perfect bracket are an astronomical 9.2 quintillion.

VOA: standard.2009.03.25

Last year,up to 37 million Americans paid money to join bracket pools.

VOA: standard.2009.03.25

But what are the odds of filling out that perfect bracket?

VOA: standard.2009.03.25