9. Why is Ben Franklin is on the $100 bill?

Unlike the rest of the faces on U.S. notes, Benjamin Franklin was never a president or even a treasury secretary.

What he did for the cause of America in the early days is extensive. He was a noted polymath with diverse interests. He invented the lightning rod, bifocals, the Franklin stove amongst other things. He was also a leading slave abolitionist and earned the title of "The First American" for his early and relentless campaigning for colonial unity.

He was one of America’s Seven Key Founding Fathers and his signature is on the Declaration of Independence. Another reason his face is on the photo could be because he used his printing skills to help the U.S. print the first notes.

10. $2 bills

Due to the rarity of these bills, some people believe that they are worth much more than the face value. Unfortunately, that is not true.

Production of these bills is about 1 percent of all notes currently produced.

The note was introduced in 1862 and discontinued 104 years later. The confusion is because it was reintroduced ten years after discontinuing as part of the U.S. Bicentennial celebration.

The gift shop at the home of Thomas Jefferson, whose picture is on the bill, gives them out as change to encourage circulation of these notes.