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

13.06.2025 02:55

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

and for binary 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)

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

For those who were actually old enough to have experienced the 1970s and not for those who were born in the 70s. What were the pros and cons of that era?

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

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

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

11010X

1234X

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