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The astronomers' calendar 2000-11-29
From Show_Li:
The calendar that astronomers use began on Jan. 1, 4713 B.C. on that day, the julian calendar, the lunar calendar, and roman tax system calendar all coincided. This won't happen again until 3267 A.D.
(a). How many years ago was the astronomer's calendar started?
(b). Find the number of years between times that the three calendars coincided.

Answered by Penny Nom.
Prime dates 1999-03-25
From Jessica Brown:
I'm asking how do you figure out all the prime numbers in a year and, whats the average amount of prime numbers per week.
Answered by Jack LeSage and Penny Nom.
 
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