What is the sum of X+XX+XXX+XXXX?
Last Updated: 01.07.2025 11:27

1234X
and for binary would be
It’s a matter of interpretation.
Police arrest roughly 60 protesters outside US Capitol - CNN
*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)
What is the sum of X+XX+XXX+XXXX?
DNA from 9,000-year-old skeletons disproves migratory waves theory from South Africa - Earth.com
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
However, X +X^2 +X^3 + X^4 is a valid algebraic answer,
11010X
The Nippon Steel Deal: A Master Class in Winning the Working Class - The Free Press