What is the sum of X+XX+XXX+XXXX?
14.06.2025 15:56

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
and for binary would be
Why is my older sister so mean to me as if I was her enemy?
It’s a matter of interpretation.
However, X +X^2 +X^3 + X^4 is a valid algebraic answer,
What is the sum of X+XX+XXX+XXXX?
*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
1234X
How do you handle your mother-in-law after you heard her talking badly about you in the next room?