What is the sum of X+XX+XXX+XXXX?
16.06.2025 03:37

It’s a matter of interpretation.
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)
11010X
Why has my ex moved on so fast after years of being together with me?
1234X
However, X +X^2 +X^3 + X^4 is a valid algebraic answer,
*Note that the abbreviation XL (for XXXX) appeared quite late in the Roman period, and never found universal favour
How can I get my ex-husband to love me again?
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
What is the sum of X+XX+XXX+XXXX?
How can people balance religious beliefs with seeking professional mental health care?