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

15.06.2025 10:30

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

11010X

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

What was the weakest period in US history in terms of military strength? Was it during World War II or the Vietnam War?

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

It’s a matter of interpretation.

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

Why do people have trouble accepting the very true fact that "The Blue Marble" photo of Earth is a composite and therefore (just like every other subsequent "picture" of Earth NASA has ever shown us) not a real photo but computer generated?

and for binary would be

1234X

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)

Why do I feel bad when I see white girls dating black guys, am I racist?