10 in Roman numerals, how to write?

10 = X
9 = ? ... 11 = ?

In Roman numerals online converter

Latest conversions of numbers to Roman numerals

10 = X Jan 21 22:35 UTC (GMT)
4 = IV Jan 21 22:35 UTC (GMT)
2 = II Jan 21 22:35 UTC (GMT)
2,016 = MMXVI Jan 21 22:35 UTC (GMT)
2,017 = MMXVII Jan 21 22:35 UTC (GMT)
9 = IX Jan 21 22:35 UTC (GMT)
13 = XIII Jan 21 22:35 UTC (GMT)
51,005 = (L)MV Jan 21 22:35 UTC (GMT)
18 = XVIII Jan 21 22:35 UTC (GMT)
6 = VI Jan 21 22:35 UTC (GMT)
1 = I Jan 21 22:35 UTC (GMT)
53 = LIII Jan 21 22:35 UTC (GMT)
1,111 = MCXI Jan 21 22:35 UTC (GMT)
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