Logo

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

10.06.2025 09:16

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

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)

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

and for binary would be

They Just Wanted to Make a Space Movie. Instead, They Uncovered a Mind-Blowing Cosmic Secret - The Daily Galaxy

11010X

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

1234X

'The Life of Chuck' Filmmaker Mike Flanagan on Stephen King Film - IndieWire

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

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

It’s a matter of interpretation.

ispace's Resilience spacecraft lands on the moon this week: Here's how to see the landing zone on the lunar surface - Space