XXI
XXI = 21
21 = XXI
The Roman numeral for 21 is XXI
The Roman numeral for 21 is XXI
XXL is not a valid roman numeral.
The Roman numeral for December 21, 2009 is XXI.XII.MMIX.
21 = XXI
The Roman numeral for 21 is XXI
It is: (XXI)CCII which means 1,000*21+202 = 21,202
The Roman numeral for 21 is XXI
21 = XXI
XXL is not a valid roman numeral.
The Roman numeral for December 21, 2009 is XXI.XII.MMIX.
XXI
XXI = 21
XXI
21
Since X is 10, and I is 1, I would think the answer is 21.