What do the roman symbols for numbers stand for?

Answer 1

I = 1

ii = 2

iii = 3

iv = 4

v = 5

vi = 6

vii = 7

viii = 8

ix = 9

x = 10

xi = 11

xii = 12

I = 1, V = 5, X = 10, L = 50, C = 100, D = 500 and M = 1000.

C and M come from the Latin words for hundred and thousand...