Who invented the question mark?

Question

Who invented the question mark?

Answer 1

i guess someone who didn't know the answer.

Answer 2

Mark

Answer 3

The question mark, which, strictly speaking, is not a puncutation mark, but actually a mark of intonation like the exclamation mark, may have descended from the Latin word quaestiō ("question") which was abbreviated during the Middle Ages to Qo. The uppercase Q was written above the lowercase o, and this mark was transformed into the modern symbol.