What is the sum of X+XX+XXX+XXXX?
Last Updated: 17.06.2025 15:00

It’s a matter of interpretation.
and for binary would be
What is the sum of X+XX+XXX+XXXX?
What a list actors/ actresses are notorious for being jerks in real life?
1234X
However, X +X^2 +X^3 + X^4 is a valid algebraic answer,
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 are mean nicknames to call my sister? She is always so mean to me.
*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)
11010X