Quan, Daniel, and Sol, from blinkdagger and Wild About Math!, have teamed up to create a fun math contest, Monday Math Madness. Every other week, they post a math problem; after one week, a winner is randomly selected from among those sending in a correct answer, and receives a real honest-to-goodness prize!

The current contest was just posted today. Go give it a try, and send in your solution — maybe you’ll win! Even if you don’t, of course, it’s still a fun problem. Here it is:

Aside from 1 and 9, are there any perfect squares whose digits are all odd? Justify your answer.

**Don’t** post any answers or discussion here! If you think you’ve solved it, send your answer to mondaymathmadness at gmail dot com.

## About Brent

Assistant Professor of Computer Science at Hendrix College. Functional programmer, mathematician, teacher, pianist, follower of Jesus.

Hey, what an interesting blog I found here! Pretty nice stuff. But I see you haven’t updated in over a month. Get to it, cause I just suscribed :D

Thanks! I’ll get right on that! =)