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Q: What are the prime and composite numbers between 10 and 30?

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Prime numbers: 2 3 5 and 7 Composite numbers: 4 6 8 9 and 10 Note that 1 is neither a prime or a composite number

The prime numbers between 1 and 10 are 2, 3, 5, and 7.1 is just 1 - it is not prime or composite.4, 6, 8, 9, and 10 are composite.2, 3, 5, 7

1 is special 2 prime 3 prime 4 composite 5 prime 6 composite 7 prime 8 composite 9 composite 10 composite 11 prime 12 composite ext.

They are composite.

I've found all the prime numbers...

Yes. Since numbers 9 and 10 are not prime, they are composite. Those numbers that are divisible by some other number are called composite numbers.

19 is prime number. 10, 21 and 62 are composite numbers.

I can check them for divisibility by prime numbers.

9 and 10 are but 11 is prime

All of them except for 11, 13, 17 and 19 which are prime numbers

The composite numbers between 10 and 20 are 12, 14, 15, 16 and 18.

A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite. Both 4 and 10 are composite.

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