What is the sum of X+XX+XXX+XXXX?
11.06.2025 01:50

*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.
1234X
10 Albums Out This Week You Should Listen to Now - Pitchfork
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?
However, X +X^2 +X^3 + X^4 is a valid algebraic answer,
Is the 4B movement's aggressiveness against men for seeing women as mantelpieces valid?
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
and for binary would be
11010X