Here’s another match equation puzzle.
The illustration represents an incorrect Roman numerals equation (3 = 30). Move only two matches to make this equation valid. You cannot shift the position of the other matches.
Solution (Click to Show)
The solution involves Roman numerals and a multiplication sign. So, it can be read as:
C = X × X,
where X is the Roman numeral for 10 and C is the Roman numeral for 100.