What is the sum of X+XX+XXX+XXXX?
Last Updated: 01.07.2025 13:15
It’s a matter of interpretation.
However, X +X^2 +X^3 + X^4 is a valid algebraic answer,
What is the sum of X+XX+XXX+XXXX?
NASA Hides The Emmy It Just Won (Update) - NASA Watch
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
11010X
1234X
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
Eric Mangini defends Shedeur Sanders after speeding incidents - New York Post