What is the sum of X+XX+XXX+XXXX?
Last Updated: 19.06.2025 05:38
*Note that the abbreviation XL (for XXXX) appeared quite late in the Roman period, and never found universal favour
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)
It’s a matter of interpretation.
11010X
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
What is the sum of X+XX+XXX+XXXX?
King Charles III pays respects to Air India crash victims at his annual birthday parade - PBS
1234X
However, X +X^2 +X^3 + X^4 is a valid algebraic answer,
and for binary would be