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

Last Updated: 18.06.2025 00:00

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

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)

1234X

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

How do I stop having work crushes because I only keep getting disappointed almost every day as I keep seeing they don’t like me back and won’t ever ask me out?

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

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

It’s a matter of interpretation.

When a dog smells another dog’s poo or wee, do they then remember that scent for when they smell it again, or even further know which dog they are smelling if they know the dog?

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

and for binary would be

11010X

Does having the wrong address on my car insurance invalidate my policy?