What is the sum of X+XX+XXX+XXXX?
Last Updated: 02.07.2025 02:22

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.
*Note that the abbreviation XL (for XXXX) appeared quite late in the Roman period, and never found universal favour
What are some good series or movies like GOT in the fantasy genre?
What is the sum of X+XX+XXX+XXXX?
11010X
1234X
Nvidia Stock Gains. What’s Driving the Chip Maker. - Barron's
and for binary would be
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