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

11.06.2025 15:25

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)

1234X

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

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*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

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

Why are people so terrified or bothered that a person has original creative ideas, hobbies or unique interests?

It’s a matter of interpretation.

11010X

and for binary would be

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