What is the sum of X+XX+XXX+XXXX?
11.06.2025 01:38
It’s a matter of interpretation.
11010X
1234X
Why is going on a date today so much different than it was when I was young?
However, X +X^2 +X^3 + X^4 is a valid algebraic answer,
What is the sum of X+XX+XXX+XXXX?
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)
Why don't we hear our own snoring?
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
*Note that the abbreviation XL (for XXXX) appeared quite late in the Roman period, and never found universal favour
and for binary would be
Japanese queue for hours as rice shortage deepens - Financial Times