September is the ninth month. 9 is IX. 21 is XXI. It would be written as IX-XXI
September 21, 2013 can be written in Roman numerals as "XXI-IX-MMXIII".
IX-XXI-MCMLXXXVIII
IX-XXI-MCMLXXXVIII
Examples: XXI - IX = XII (21 - 9 = 12) MMX - CM = MCX (2010 - 900 = 1110)
September is the ninth month. 9 is IX. 21 is XXI. It would be written as IX-XXI
September 21, 2013 can be written in Roman numerals as "XXI-IX-MMXIII".
IX-XXI-MCMLXXXVIII
IX-XXI-MCMLXXXVIII
Examples: XXI - IX = XII (21 - 9 = 12) MMX - CM = MCX (2010 - 900 = 1110)
In today's modern notation of Roman numerals: IX-XXI-MCMLXXXII but the ancient Romans probably wrote them out quite differently.
XXI = 21
9 is IX. Roman numerals for 1 - 27: I, II, III, IV, V, VI, VII, VIII, IX, X, XI, XII, XIII, XIV, XV, XVI, XVII, XVIII, XIX, XX, XXI, XXII, XXIII, XXIV, XXV, XXVI, XXVII
Every third number from 3 to 30 in Roman numerals...III, VI, IX, XII, XV, XVIIII, XXI, XXIV, XXVII, XXX.
The value of a 1867 Pope Pius IX 1 Soldo in Extremely Fine (XF) condition ranges from $5 to $15, depending on its specific characteristics and rarity.
XXI is the same thing as 21.
Freak XXI was created in 1998.