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

Last Updated: 02.07.2025 06:34

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

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

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

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

Who is/was the genuinely toughest actor in Hollywood movies?

1234X

It’s a matter of interpretation.

11010X

AI-Focused Apple Music Reboot Said to Be in the Works - MacRumors

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)

and for binary would be

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

Treasuries Rally on Fed Cut Hopes, Stocks Hit Peak: Markets Wrap - Bloomberg