What is the sum of X+XX+XXX+XXXX?
14.06.2025 12:22

What is the sum of X+XX+XXX+XXXX?
However, X +X^2 +X^3 + X^4 is a valid algebraic answer,
11010X
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)
1234X
*Note that the abbreviation XL (for XXXX) appeared quite late in the Roman period, and never found universal favour
How far back into your childhood can your remember and what is your favorite memory of that time?
It’s a matter of interpretation.
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