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

Last Updated: 17.06.2025 14:52

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

1234X

It’s a matter of interpretation.

11010X

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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

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)

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

Artists get better with age, e.g., painting. Yet when it comes to pop music, the famous work tends to be written when musicians are in their twenties. So, why aren't Bob Dylan or the Stones banging out amazing tunes now?

and for binary would be

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

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

Why are there posts saying the T in LGBT should be dropped? With what is happening in the US and beyond against the trans community cause for concern that if this is accepted could it be deemed acceptable to start on the LGB community again?