What is the sum of X+XX+XXX+XXXX?
Last Updated: 02.07.2025 15:53

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)
However, X +X^2 +X^3 + X^4 is a valid algebraic answer,
and for binary would be
It’s a matter of interpretation.
11010X
What is the sum of X+XX+XXX+XXXX?
Can you share some of your favorite jokes that are not well-known but always make people laugh?
*Note that the abbreviation XL (for XXXX) appeared quite late in the Roman period, and never found universal favour
1234X
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
Chevy’s C8 Corvette ZR1 Supercar Is Even Faster Than It Expected - Robb Report