Which number system uses only the symbols 1 and 0?

More Questions:

Zymology, also known as zymurgy, is the study of what?

What year was author J. K. Rowling born in?

What 1920's novel by Hermann Hesse, gave it’s name to a 1960's rock group fronted by singer John Kay?

The world's least salty seawater is found in the Gulf of Bothnia, between what two countries?

Which US state is nicknamed the "Green Mountain State"?

What animal is also called a wildebeest?

What is the atomic number of the element uranium?

What color is a huckleberry?

What is the common name for a "circumorbital hematoma"?

Which actor played the role of Steve Jobs in the movie "Pirates of Silicon Valley"?

In the early 1960's, Marvin Gaye worked as a session drummer for which band?

Who was the first character Johnny Depp portrayed in more than one movie?

Who authored the famous poem "The Charge of the Light Brigade"?

What was Sunday, January 30th 1972, generally remembered as in Ireland?

"My Ever Changing Moods" was a hit for which UK band?