What is the sum of X+XX+XXX+XXXX?
Last Updated: 18.06.2025 00:07

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.
However, X +X^2 +X^3 + X^4 is a valid algebraic answer,
My friend asked my crush and he said my crush hates me but not in a rude way. What does that mean?
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?
1234X
Why can't we send flat Earthers to space and show them the shape of Earth?
and for binary would be
*Note that the abbreviation XL (for XXXX) appeared quite late in the Roman period, and never found universal favour
11010X
Will Miami’s latest effort at “culture change” work? - NBC Sports