The 2012 presidential election is less than six months away, so let's brush up on some former Commanders-in-Chief in today's mentalfloss.com Brain Game Free-for-all Friday challenge. Good luck!

The last names of four former U.S. presidents
contain the consecutive letters "OO."

Name all four.

Here are the ANSWERS.

THE ANSWERS:

Calvin COOLIDGE, Herbert HOOVER, Franklin ROOSEVELT, and Theodore ROOSEVELT.

Thanks for playing, and have a great weekend!