Roman numerals is another numerical system.
We often see roman numerals used in giving examples such as i) , ii) , iii) , iv)
in films such as Rocky II to Rocky V
to expressed the date a movie is made such as Star Wars in MCMLXXVII
Here is a guideline to roman numerals
i or I = 1
v or V = 5
x or X = 10
l or L = 50
c or C = 100
d or D = 500
m or M = 1000
Please note: you can never have more than three of the same symbol in a row.
Therefore 1 - 40 would look like this...
I = 1 XXI = 21
II = 2 XXII = 22
III = 3 XXIII = 23
IV = 4 XXIV = 24
V = 5 XXV = 25
VI = 6 XXVI = 26
VII = 7 XXVII = 27
VIII = 8 XXVIII = 28
IX = 9 XXIX = 29
X = 10 XXX = 30
XI = 11 XXXI = 31
XII = 12 XXXII = 32
XIII = 13 XXXIII = 33
XIV = 14 XXXIV = 34
XV = 15 XXXV = 35
XVI = 16 XXXVI = 36
XVII = 17 XXXVII = 37
XVIII = 18 XXXVIII = 38
XIX = 19 XXXIX = 39
XX = 20 XL = 40
And the years 2008 and 2009 would look like this...
MMVIII & MMIX