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

Last Updated: 28.06.2025 03:37

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

1234X

11010X

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

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

and for binary would be

It’s a matter of interpretation.

Why is pure dopamine not a recreational drug? And if it was wouldn’t it be the most addictive and fairly side effect free?

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

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)

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

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