Logo

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

13.06.2025 02:13

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

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

It’s a matter of interpretation.

1234X

The Tyrese Haliburton Conundrum - The Ringer

11010X

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)

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

32.4 Patch Notes - Blizzard Entertainment

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

and for binary would be

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

Summer Game Fest June 2025: Everything announced - Eurogamer