As promised here are the answers to yesterday's trivia challenge. How'd you stack up on presidential knowledge?

1. What conspirator in the Lincoln assaissination was later pardoned for his heroic action during a yellow fever outbreak at his prison? Dr. Samuel Mudd
2. Which president installed solar panels on the White House roof? Jimmy Carter
3. Who was the only president to survive two assassination attempts by women? Gerald Ford
4. Who was the first daughter of a U.S. president to pose for Playboy magazine? Patti Davis, daughter of Ronald Reagan
5. Which sitting president commanded a military unit during his term of office? James Madison, during the War of 1812

This article originally posted on Fort Stewart Patch.