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

Last Updated: 01.07.2025 10:23

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

It’s a matter of interpretation.

1234X

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

Which Shakespeare words have completely changed meaning in modern English?

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

11010X

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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and for binary would be

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

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)

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