
1.11 Roman Numerals
(Continued)
Upper Case Lower Case Greek Letter Name
C χ Chi
Ψ ψ Psi
Ω ω Omega
Number Roman Numeral
1I
2II
3 III
4IV
5V
6VI
7 VII
8 VIII
9IX
10 X
11 XI
12 XII
13 XIII
14 XIV
15 XV
16 XVI
17 XVII
18 XVIII
19 XIX
20 XX
30 XXX
40 XL
50 L
60 LX
70 LXX
80 LXXX
90 XC
100 C
200 CC
300 CCC
400 CD
(Continued)
12 Mathematical Formulas for Industrial and Mechanical Engineering