Logo

What is the sum of X+XX+XXX+XXXX?

08.06.2025 00:37

What is the sum of X+XX+XXX+XXXX?

11010X

It’s a matter of interpretation.

*Note that the abbreviation XL (for XXXX) appeared quite late in the Roman period, and never found universal favour

Microbiome: First bacteria we meet can keep us out of hospital - BBC

as would be assuming that these are representations of conventional numbers, in which case the answer for number bases of five or more would be

Given the use of upper case, I personally would initially assume Roman numerals*, so the answer would be C (100 in present-day decimal notation)

and for binary would be

‘It Is Going to Happen’: JPMorgan CEO Jamie Dimon Warns of Crack in the Bond Market - Barron's

However, X +X^2 +X^3 + X^4 is a valid algebraic answer,

What is the sum of X+XX+XXX+XXXX?

1234X

"Unlike Anything We Have Seen Before": Repeating Signal From Deep In Galactic Plane Puzzles Astronomers - IFLScience