Logo

What is the sum of X+XX+XXX+XXXX?

12.06.2025 01:47

What is the sum of X+XX+XXX+XXXX?

It’s a matter of interpretation.

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)

and for binary would be

Why does my 5-year-old daughter keep repeating the words 'they will come for us, they will find us and touch us'? I'm quite scared.

11010X

1234X

However, X +X^2 +X^3 + X^4 is a valid algebraic answer,

Aristo Sham of Hong Kong wins the 2025 Van Cliburn Piano Competition - Dallas News

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?

*Note that the abbreviation XL (for XXXX) appeared quite late in the Roman period, and never found universal favour

Why is sin so sweet?