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How many sets of 3 primes sum to 20?

 Jul 7, 2015

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 #1
avatar+130458 
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Note....."2" has to be in the set.......

 

{2, 5, 13}  {2, 7, 11}    ...anything else???

 

 

 Jul 7, 2015
 #1
avatar+130458 
+11
Best Answer

Note....."2" has to be in the set.......

 

{2, 5, 13}  {2, 7, 11}    ...anything else???

 

 

CPhill Jul 7, 2015

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