What punctuation mark do mathematicians use to express a number's factorial?

More Questions:

In pool, what color is the eight ball?

What do you need to send a semaphore message?

What year marked the first appearance of Pinocchio?

Which US state is home to the city of Cape Girardeau?

Prudence Island is the third largest island in which US state?

The name for this semi-precious stone comes from the Latin for "sea water"?

Hydrargyrum is an old name for which element on the periodic table?

What seven-letter "B'word is often applied to those suffering from manic depression?

What does the Roman numeral C represent?

'Skyrim" is the fifth installment in which video game series?

What code name does Linda Fiorentino receive at the end of the movie "Men in Black"?

What is Doc allergic to in the movie "Back To The Future"?

What Civil War anthem about a radical abolitionist inspired the US military anthem "The Battle Hymn of the Republic"?

What date did the United Kingdom European Union membership referendum took place on?

Which rock band released the singles "Karma Police" and "Creep"?