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

Last Updated: 02.07.2025 03:50

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

11010X

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

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

Scientists visualize key protein structures linked to immune response and inflammation - Phys.org

It’s a matter of interpretation.

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

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

Devin Harjes, ‘Boardwalk Empire,’ ‘Daredevil’ and ‘Gotham’ Actor, Dies at 41 - The Hollywood Reporter

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)

1234X

and for binary would be

‘The Office’ Star Rainn Wilson Says the Show Was a ‘Struggle’ After Steve Carell Left: ‘We Knew it Was Coming For a Long Time’ - Variety