Originally Posted by: earthman buckAh yes, I see my mistake now.

There's this game called "MindTrap" that has a ton of riddles like these. For the past month or so I've been grabbing a handful each night and refusing to go to sleep until I solve them. One of these days I'll pick out a few good ones and post 'em.

Haven't seen the game yet, lookin forward to seeing a few good ones.
In the mean time, here's another.
1) A elementry class celebrates Valentines Day. Every student sends a Valentine to each student in the class for a total of 306 Valentine's.
How many students are in the class?