Question

Which Roman number that we cannot write…?​

Answer 1

Answer:

Zero.

Any negative number.

Any number with a fractional portion.

Complex an imaginary numbers, obviously.

Infinity....

Answer 2

Answer:

the roman numeral system, the roman numerals like I, V, X, C etc. cannot be written more than three times. And so, X cannot be written 4 times in roman numerals.