There are infinitely many composite numbers.
There are, therefore, infinitely many subsets of ten such numbers.
There are, therefore, infinitely many possible sums.
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What is the sum of the composite numbers less than 10?4 + 6 + 8 + 9 = 27
The sum is 75.
2 composite numbers whose prime factorization have a sum of 10 are 30 (2+3+5=10) and 21 (3+7=10).
The sum of 5 composite numbers can be either composite, or prime, depending on the case.
21 and 32