What is the sum of X+XX+XXX+XXXX?
Last Updated: 26.06.2025 00:19
What is the sum of X+XX+XXX+XXXX?
However, X +X^2 +X^3 + X^4 is a valid algebraic answer,
and for binary would be
Black holes don’t behave as we thought, study finds - The Brighter Side of News
*Note that the abbreviation XL (for XXXX) appeared quite late in the Roman period, and never found universal favour
1234X
It’s a matter of interpretation.
Big Cyberpunk 2077 Updates Were Thought To Be Done, But 2.3 Patch Launches Soon - GameSpot
11010X
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