# Mistakes give rise to Problems-9

Logic Level 4

In Roman Numerals, if you say that $$XLIV\times X=CDXL$$, you're correct.

Otherwise, $$\overline{XLIV}\times \overline{X}=\overline{CDXL}$$ is a mistake and it's not necessarily correct.

For how many ordered six-tuplets $$(C,D,I,L,V,X)$$ of single digit positive integers $$(x\neq 0)$$ is this mistake true?

Note: All letters must denote different numbers.

×