What is the sum of X+XX+XXX+XXXX?
Last Updated: 20.06.2025 04:16

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)
*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.
Juror Dismissed In Sean "Diddy" Combs Trial For Perceived "Lying" - Deadline
11010X
1234X
However, X +X^2 +X^3 + X^4 is a valid algebraic answer,
Why do you think Democrat favorability ratings are so low?
What is the sum of X+XX+XXX+XXXX?
and for binary would be
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
Has a cop ever said something to you which was completely unexpected?