Fun problem from today
Correct answers will stay screened for a little while, solve this:
Given two prime numbers p1 and p2 (> 5) whose difference is 2, prove that their average is divisible by 6
Some example prime numbers in this set include:
5 & 7
11 & 13
17 & 19
41 & 43
Have fun. :-)
UPDATE 2006-01-08:
I have unscreened the correct answers.
Given two prime numbers p1 and p2 (> 5) whose difference is 2, prove that their average is divisible by 6
Some example prime numbers in this set include:
5 & 7
11 & 13
17 & 19
41 & 43
Have fun. :-)
UPDATE 2006-01-08:
I have unscreened the correct answers.