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

13.06.2025 06:13

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

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

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

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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)

It’s a matter of interpretation.

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

Why do liberals and Democrats think it’s “ironic” for Donald Trump to say “We have to get back to law and order”?

11010X

1234X

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

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