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

Last Updated: 21.06.2025 03:10

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

and for binary would be

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

So I’m getting piano lessons and my teacher wants me to get an upright piano instead of a keyboard. An upright piano is way above my price range, so what do I do? And what’s the difference between an upright piano and a keyboard?

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)

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

Do people of NYC drive around Central Park all the time? Is there any subway tunnel to cross the park quickly? Is it annoying for people and does it cause traffic?