Roman Numerals / 10

10 in Roman Numerals

X

10 = X (10). That's X, purely additive. 10 splits into 1 ten (X), together forming X. One below 10 is IX (9); one above is XI (11). At 1 symbol, X is compact for 10. 10: 2 Arabic digits, 1 Roman symbol, for 10. In binary, 10 is 1010, 4 bits long for 10.