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The numeric system represented by Roman numerals originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages. Numbers in this system are represented by combinations of letters from the Latin alphabet. Roman numerals, as used today, employ seven symbols, each with a fixed integer value, as follows
Roman numeral ( noun)
plural noun: Roman numerals
Any of the letters representing numbers in the Roman numerical system: I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, M = 1,000. In this system a letter placed after another of greater value adds (thus XVI or xvi is 16), whereas a letter placed before another of greater value subtracts (thus XC is 90).
Roman Numerals Conversion Table:-
Number
Roman numeral
Calculation
0
not defined
1
I
1
2
II
1+1
3
III
1+1+1
4
IV
5-1
5
V
5
6
VI
5+1
7
VII
5+1+1
8
VIII
5+1+1+1
9
IX
10-1
10
X
10
11
XI
10+1
12
XII
10+1+1
13
XIII
10+1+1+1
14
XIV
10-1+5
15
XV
10+5
16
XVI
10+5+1
17
XVII
10+5+1+1
18
XVIII
10+5+1+1+1
19
XIX
10-1+10
20
XX
10+10
21
XXI
10+10+1
22
XXII
10+10+1+1
23
XXIII
10+10+1+1+1
24
XXIV
10+10-1+5
25
XXV
10+10+5
26
XXVI
10+10+5+1
27
XXVII
10+10+5+1+1
28
XXVIII
10+10+5+1+1+1
29
XXIX
10+10-1+10
30
XXX
10+10+10
31
XXXI
10+10+10+1
32
XXXII
10+10+10+1+1
33
XXXIII
10+10+10+1+1+1
34
XXXIV
10+10+10-1+5
35
XXXV
10+10+10+5
36
XXXVI
10+10+10+5+1
37
XXXVII
10+10+10+5+1+1
38
XXXVIII
10+10+10+5+1+1+1
39
XXXIX
10+10+10-1+10
40
XL
-10+50
41
XLI
-10+50+1
42
XLII
-10+50+1+1
43
XLIII
-10+50+1+1+1
44
XLIV
-10+50-1+5
45
XLV
-10+50+5
46
XLVI
-10+50+5+1
47
XLVII
-10+50+5+5+1
48
XLVIII
-10+50+5+1+1+1
49
XLIX
-10+50-1+10
50
L
50
51
LI
50+1
52
LII
50+1+1
53
LIII
50+1+1+1
54
LIV
50-1+5
55
LV
50+5
56
LVI
50+5+1
57
LVII
50+5+1+1
58
LVIII
50+5+1+1+1
59
LIX
50-1+10
60
LX
50+10
61
LXI
50+10+1
62
LXII
50+10+1+1
63
LXIII
50+10+1+1+1
64
LXIV
50+10-1+5
65
LXV
50+10+5
66
LXVI
50+10+5+1
67
LXVII
50+10+5+1+1
68
LXVIII
50+10+5+1+1+1
69
LXIX
50+10-1+10
70
LXX
50+10+10
71
LXXI
50+10+10+1
72
LXXII
50+10+10+1+1
73
LXXIII
50+10+10+1+1+1
74
LXXIV
50+10+10-1+5
75
LXXV
50+10+10+5
76
LXXVI
50+10+10+5+1
77
LXXVII
50+10+10+5+1+1
78
LXXVIII
50+10+10+5+1+1+1
79
LXXIX
50+10+10-1+5
80
LXXX
50+10+10+10
81
LXXXI
50+10+10+10+1
82
LXXXII
50+10+10+10+1+1
83
LXXXIII
50+10+10+10+1+1+1
84
LXXXIV
50+10+10+10-1+5
85
LXXXV
50+10+10+10+5
86
LXXXVI
50+10+10+10+5+1
87
LXXXVII
50+10+10+10+5+1+1
88
LXXXVIII
50+10+10+10+5+1+1+1
89
LXXXIX
50+10+10+10-1+10
90
XC
100-10
91
XCI
100-10+1
92
XCII
100-10+1+1
93
XCIII
100-10+1+1+1
94
XCIV
100-10-1+5
95
XCV
100-10+5
96
XCVI
100-10+5+1
97
XCVII
100-10+5+1+1
98
XCVIII
100-10+5+1+1+1
99
XCIX
100-10-1+10
100
C
100
200
CC
100+100
300
CCC
100+100+100
400
CD
500-100
500
D
500
600
DC
500+100
700
DCC
500+100+100
800
DCCC
500+100+100+100
900
CM
1000-100
1000
M
1000
5000
V
10000
X
50000
L
100000
C
500000
D
1000000
M
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