SOLUTION: The sum of the composite numbers between 20 and 30,minus the sum of the sum of the prime numbers
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Question 854313: The sum of the composite numbers between 20 and 30,minus the sum of the sum of the prime numbers
Answer by LinnW(1048) (Show Source): You can put this solution on YOUR website!
Composite numbers between 20 and 30 are
20 21 22 24 25 26 27 28 30
There sum is 20+21+22+24+25+26+27+28+30 = 223
Prime numbers between 20 and 30
23 29
Their sum is 23+29 = 52
223 - 52 = 171
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