What is the sum of X+XX+XXX+XXXX?
12.06.2025 00:02
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)
11010X
However, X +X^2 +X^3 + X^4 is a valid algebraic answer,
and for binary would be
*Note that the abbreviation XL (for XXXX) appeared quite late in the Roman period, and never found universal favour
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
Jennie Garth 'Never Felt More Confident' as She Poses In First Underwear Photoshoot at 53 - TooFab
1234X
It’s a matter of interpretation.
What is the sum of X+XX+XXX+XXXX?