What do the seven letters I V X L C D M stand for?: 1, 5, 10, 50, 100, 500, 1000
1: I
2: II
3: III
4: IV
5: V
6: VI
7: VII
8: VIII
9: IX
10: X
11: XI
12: XII
13: XIII
14: XIV
15: XV
16: XVI
17: XVII
18: XVIII
19: XIX
20: XX
21: XXI
22: XXII
23: XXIII
24: XXIV
25: XXV
26: XXVI
27: XXVII
28: XXVIII
29: XXIX
30: XXX
35: XXXV
40: XL
44: XLIV
49: XLIX
50: L
60: LX
70: LXX
80: LXXX
90: XC
99: XCIX
100: C
105: CV
144: CXLIV
200: CC
400: CD
444: CDXLIV
500: D
900: CM
1000: M
1492: MCDXCII
1776: MDCCLXXVI
1999: MCMXCIX
2000: MM
2024: MMXXIV
2026: MMXXVI
3000: MMM
3999: MMMCMXCIX
Which Roman numerals can be repeated up to three times?: I, X, C and M

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