What is the sum of X+XX+XXX+XXXX?
10.06.2025 02:43

It’s a matter of interpretation.
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?
An Optometrist Is Begging People To Stop This Common Habit ASAP - AOL.com
However, X +X^2 +X^3 + X^4 is a valid algebraic answer,
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)
11010X
Have you ever heard of the god Priapus being the same as the god Phosphorus?
*Note that the abbreviation XL (for XXXX) appeared quite late in the Roman period, and never found universal favour
and for binary would be
1234X
See photos: Miguel Angel Jiménez wins the Principal Charity Classic - The Des Moines Register