From: no.email@nospam.invalid   
      
   Gerry Jackson  writes:   
   > I'm no mathematician and don't understand Paul's or  Ron's   
   > solutions. Assuming the phrase 'the first 10 digits" means the 10 most   
   > significant digits of the sum of the 100 numbers I think I would   
      
      
   Wait what, I think I have #13 as the wrong problem?  Yes, I had a saved   
   euler13.fs file that I posted, but it was actually for problem 14.  Not   
   sure how that happened, sorry.   
      
   Yeah for #13, I would just add up the leftmost 14 or so digits of each   
   number as 64-bit ints, then check that the result was not anywhere near   
   causing an overflow in the top 10 digits.  In the unlikely case where   
   that is an issue, use multi-precision.  Or in a language with native   
   bignums, the whole thing becomes trivial.   
      
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