What is the sum of X+XX+XXX+XXXX?
12.06.2025 03:57

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
1234X
What is the sum of X+XX+XXX+XXXX?
iOS 26 Could Bring Sleep Detection, Camera Controls, and New Gestures to AirPods - MacRumors
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)
11010X
*Note that the abbreviation XL (for XXXX) appeared quite late in the Roman period, and never found universal favour
Hegseth moves to rename Navy ship honoring gay rights icon Harvey Milk - The Washington Post
However, X +X^2 +X^3 + X^4 is a valid algebraic answer,
It’s a matter of interpretation.
and for binary would be