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

08.06.2025 05:00

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

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

11010X

It’s a matter of interpretation.

Do women lack the mental strength to succeed at STEM? There seems to be few women at STEM and more women leave STEM after a time of working at it. How can it be just sexism if women aren't banned from entering?

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)

and for binary would be

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

Scientists stunned as heat caught on camera ‘bouncing like sound’ for first time ever - Daily Express US

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

1234X

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

NASA unexpectedly finds 'X-shaped structures' in Earth’s upper atmosphere, which they can’t fully explain - Earth.com