What is the sum of X+XX+XXX+XXXX?
Last Updated: 16.06.2025 00:04

11010X
It’s a matter of interpretation.
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
Did you ever accidentally have sex with your brother/sister in India?
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)
1234X
*Note that the abbreviation XL (for XXXX) appeared quite late in the Roman period, and never found universal favour
Copilot Vision brings Microsoft's screen-watching AI to everyday Windows tasks - TechSpot
However, X +X^2 +X^3 + X^4 is a valid algebraic answer,
and for binary would be
What is the sum of X+XX+XXX+XXXX?