III-XXX-MMXI
XXX-III-MMXI
To write 20 in Roman numerals, you would use XX. To write 30, you would use XXX. Therefore, to write 20-30 in Roman numerals, you would write XX-XXX.
It's thirty thousands.
They are XXX and L, respectively.
VI-XXX-MMXI
XI-XXX-MMXI
XXX-VII-MMXI
XXX-VII-MMXI
It is: (XXX) which means 1,000*30 = 30,000
It is: IX-XXX-MMVI
It is: XI-XXX-MMXVI
The number 30 is XXX in Roman numerals, as each X equals 10.