answersLogoWhite

0


Best Answer

365, so says the Mensa Puzzle Calendar. "There are 356 days in a year and every month/day combination represents a "Perfect Sum" day for some 21st century year. For example 02/05 is Feb. 5, 2007 and 12/29 is Dec. 29, 2041. The only tricky date is the leap day 02/29. Since 2031 is not a leap year (not divisible by 4) 2/29 cannot be a "perfect sum" day for any year."

User Avatar

Wiki User

15y ago
This answer is:
User Avatar
More answers
User Avatar

Anonymous

Lvl 1
3y ago

365

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How many perfect sum days are there in the 21st century?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

How many days are in a 1 century?

There are 36524 days in a regular century (like the 21st century) and 36525 days in a leap century (like the 20th century).


How many songs are in green days new album 21st century breakdown?

18


How many times has Christmas come in the 21st century?

10 but in a couple days it will be the 11th time.


How many perfect sum days are there in 21st century?

365, so says the Mensa Puzzle Calendar. "There are 356 days in a year and every month/day combination represents a "Perfect Sum" day for some 21st century year. For example 02/05 is Feb. 5, 2007 and 12/29 is Dec. 29, 2041. The only tricky date is the leap day 02/29. Since 2031 is not a leap year (not divisible by 4) 2/29 cannot be a "perfect sum" day for any year."


How many days from June 21st to December 21st?

There are 183 days between the 21st of June and the 21st of December each year.


How many years is the 21st century?

A century is 100 years.


How many years is 21st century?

each century is 100 years


How many tracks are on 21st century breakdown?

There are 18 songs on 21st Centry Breakdown


Which car insurance companies are based in Pennsylvania?

There are many major companies that are available in Pennsylvania. These include 21st Century and Allstate. They will find the perfect plan for you no matter what you drive.


What are some 21st century media?

The 21st century began in 2001. Many popular media options are movies and some of the top movies from the beginning of the 21st century to current times are Moonrise Kingdom, Despicable Me, and Skyfall.


What have many western nations in Europe seen in the 21st century?

In the 21st Century, many European Western nations have seen economic slumps and increased trade with Eastern nations.


How many times will Christmas be on Sunday in the 21st century?

5