What is the sum of X+XX+XXX+XXXX?

Last Updated: 29.06.2025 00:45

What is the sum of X+XX+XXX+XXXX?

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)

It’s a matter of interpretation.

If Russia needs the resources to fund the war in Ukraine, why doesn’t it throw open its doors to visa free western tourism? Enough people would be interested, & it would start to get some hard currency as €, CHF, £, SEK, $, JPY in the tills at shops.

and for binary would be

What is the sum of X+XX+XXX+XXXX?

*Note that the abbreviation XL (for XXXX) appeared quite late in the Roman period, and never found universal favour

Why are French people known for having affairs?

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

11010X

1234X

150-Million-Year-Old Stegosaurus Skull Rewrites Dinosaur Evolution - SciTechDaily