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

Last Updated: 02.07.2025 09:14

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

1234X

11010X

It’s a matter of interpretation.

In Dan Muse, Penguins pick coach with uncommon resume, knack for development - TribLIVE.com

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

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

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

What is a good tool for product analytics besides Google Analytics?

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)

However, X +X^2 +X^3 + X^4 is a valid algebraic answer,

and for binary would be

If you were to write a book about being a K-pop fan, what would the last sentence be?