10, 12, 14, 15, 16, 18, 20
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10,12,14,15,16,18,20
The numbers 4, 6, 8, 9, 10 are composite numbers between 1 and 10 (including 10).
What is the sum of the composite numbers less than 10?4 + 6 + 8 + 9 = 27
The question is: What is a Composite number between 10 and 20. First we must remember that a Composite number is a number that is divisible by itself, 1, and also another is considered a Composite number. Therefore, the Composite numbers between 10 and 20 are 10, 12, 14, 15, 16, 18 and 20. The other numbers are called Prime numbers.
Composite numbers between 6 and 20 are 8, 9, 10, 12, 14, 15, 16, and 18.