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

11.06.2025 06:31

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

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?

What happens if someone fills up their car at the pump but leaves without paying? How is this situation typically handled?

and for binary would be

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

11010X

Is it possible to make cars that run on water instead of gasoline or other fossil fuels? Why haven't we done so yet?

1234X

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

It’s a matter of interpretation.

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