What is the sum of X+XX+XXX+XXXX?
Last Updated: 29.06.2025 06:07

and for binary would be
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
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)
Simple blood test detects cancer up to 3 years before symptoms appear - Earth.com
1234X
What is the sum of X+XX+XXX+XXXX?
It’s a matter of interpretation.
How does a man look at you when he is in love?
However, X +X^2 +X^3 + X^4 is a valid algebraic answer,
11010X
*Note that the abbreviation XL (for XXXX) appeared quite late in the Roman period, and never found universal favour