What is the sum of X+XX+XXX+XXXX?
08.06.2025 08:12
1234X
It’s a matter of interpretation.
*Note that the abbreviation XL (for XXXX) appeared quite late in the Roman period, and never found universal favour
What trains transport cars and passengers near Pompano Beach, Florida that goes to New York?
and for binary would be
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
Temu’s daily US users cut in half following end of ‘de minimis’ loophole - New York Post
However, X +X^2 +X^3 + X^4 is a valid algebraic answer,
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)
What is the sum of X+XX+XXX+XXXX?