What is the sum of X+XX+XXX+XXXX?
Last Updated: 29.06.2025 05:15
What is the sum of X+XX+XXX+XXXX?
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
‘Titan: The OceanGate Disaster’ Review: The Horrors of Hubris on Netflix - WSJ
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
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
Chime, last valued at $25B, aims for $11B in upcoming IPO - TechCrunch
1234X
It’s a matter of interpretation.
and for binary would be
CrowdStrike Swings to Loss as Expenses From Last Summer’s Outage Persist - WSJ