What is the sum of X+XX+XXX+XXXX?
12.06.2025 04:21
What is the sum of X+XX+XXX+XXXX?
and for binary would be
*Note that the abbreviation XL (for XXXX) appeared quite late in the Roman period, and never found universal favour
Europe cuts interest rates as Trump's tariffs loom - BBC
It’s a matter of interpretation.
11010X
However, X +X^2 +X^3 + X^4 is a valid algebraic answer,
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)
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
1234X
Flight deal experts spot a surprise upcharge: Flying solo - The Washington Post