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

Last Updated: 01.07.2025 09:06

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

and for binary would be

It’s a matter of interpretation.

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

Seven years later, Nintendo fans beat Switch game even the devs didn’t - Polygon

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,

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

Derek Jeter Shares Brutal Reality for Yankees After Dodgers Loss - Sports Illustrated

11010X

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

What is your craziest/worst Halloween story?