what is zero in roman numerals?

They didn't have smiley faces in olden times imo

they might have done. them egyptian fellas had them there hyramagriffiths.

Not only was there no zero, you couldn't multiply or divide (only by adding or subtracting like a duracell bunny).
In arabic and farsi zero is a dot.

VVX ?

I 1
V 5
X 10
L 50
C 100
D 500
M 1,000

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Nil desperandum.

http://www.livescience.com/27853-who-invented-zero.html