1.Find the minimum sum of three 3-digit primes, using all non-zero digits.
2.What is the smallest possible sum of primes which are formed using each of the digits 1 through 9?
(In reply to solutions
I will not argue whether an interpretation other than mine makes sense, irrational;
I should have worded it better , like "all the non-zero digits", or "using 9 distinct non-zero digits" , but clearly I had the 999 result in mind.
If anyone solved , like " primes, all using non-zero digits", ok ,so be it. It just was not my intention.