## Calendar Math Puzzle: What Day is Duorp's 25th Urp Birthday?

Submitted by Atanu Chaudhuri on Tue, 07/05/2024 - 04:09

Duorp was born in planet Urp on the first day of the fourth month on a Fourday. Each week has 5 days, each month 10 days, a year 180 days except..read on...