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

14.06.2025 11:17

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

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

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

11010X

Is there a type of function where every point has exactly one tangent line passing through it? If yes, what is this type of function called?

1234X

It’s a matter of interpretation.

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

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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)

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

and for binary would be

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