What is the sum of X+XX+XXX+XXXX?
Last Updated: 02.07.2025 02:26

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)
It’s a matter of interpretation.
11010X
Marchand nets 2OT winner as Florida evens Finals - ESPN
However, X +X^2 +X^3 + X^4 is a valid algebraic answer,
and for binary would be
*Note that the abbreviation XL (for XXXX) appeared quite late in the Roman period, and never found universal favour
Can shaving hair by Veet in our vagina cause diseases?
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 the sum of X+XX+XXX+XXXX?
The biggest binoculars we've ever tested: Celestron SkyMaster 25x100 hands-on review - Live Science