Do there exist three 2-digit primes such that:
- Any two of the three, averaged, produce another prime, and
- The average of all three is prime
I have found one set, I think there may be more.
47, 71, 11
(47+71)/2=59
(47+11)/2=29
(71+11)/2=41
(47+71+11)/3=43.
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Posted by Juggler
on 2004-10-22 13:24:22 |