Date: Tue, 23 Mar 1999 19:17:54 -0800
Subject: Prime dates
3rd grade elementary
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.
There are three kinds of months, those with 30 days, those with 31 days and February.
You might want to start by listing the prime dates for the shortest month (February). This list will change if it is a leap year. Then you could list the prime numbers for all the months with 30 days. (The same as Feb with maybe some extra.) Then you could make the list for the months with 31 days.
Write a list if the 12 months and beside each month write the number of prime dates in that month. Add these 12 numbers to get the total number of prime dates in a year. You know how many weeks there are in a year and so you can calculate the average number of prime dates per week by dividing the total number of prime dates by the number of weeks in a year.
CheersGo to Math Central
Jack and Penny
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