The NCAA tournament is looming and your co-workers or friends want you to enter their bracket pool. However, you haven't watched a single NCAA men's basketball game all season and you can't tell the difference between a Blue Devil and a Sun Devil.

No worries -- you don't need to be a basketball genius to enter a bracket in a pool.

After all, there are more than 9 quintillion ways to fill out a bracket (9,223,372,036,854,775,808 possibilities, to be exact) and that's not including the newly expanded "First Four" play-in games, in which case that number climbs to more than 147 quintillion.

In other words, if you nail a perfect bracket, you may want to start playing the lottery as well.

Whether you're in it to win it or just playing for fun, we've got some tips to ensure your bracket is a solid contender this -- or any other -- year.

Bracket Tip No. 5: Know Your Math >>