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

Last Updated: 22.06.2025 00:42

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

and for binary would be

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

Why cant school buses ditch kids who are late to the bus at the school? Like on the way home, if a kid is late when all the others arrived to the bus on time, why cant they leave the late kid behind since its not fair to the on time kids to wait?

It’s a matter of interpretation.

1234X

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

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

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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