It is 32
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Yes.30 is a composite number because it has more than two factors
The next composite number after 20 is 21.
30 is composite. A composite number is simply a number that has more factors than 1 and itself. So since 3 times 10 is 30, we can call 30 composite. A prime number is a number whose factors are only 1 times the number, such as 3, 5, 7, 13, and 29.
61
The three composite numbers are 28, 30 and 32. Their sum is 90.