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11 composite

8 prime

1 neither

Q: How many prime and composite numbers are there between 1 and 20?

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Many prime numbers and many composite numbers.

Search the Internet for a list of prime numbers - the Wikipedia article on prime numbers might list a few. All numbers between 2-100 that are not prime, are composite. (The number is not counted as prime, nor as composite.)

The 8th prime number is 19. The 12th prime number is 37. There are 17 numbers between 19 and 37. There are three prime numbers between the 8th and 12th prime numbers (the 9th, 10th, and 11th). So, there are 17 - 3 = 14 composite numbers.

Look up a list of prime numbers (a Google search for "prime numbers" or "list of prime numbers" should do); every number (greater than 1) that is NOT a prime number is composite.

Yes, there are many more composite numbers than prime.

All of them except for 29 and 31 which are prime numbers

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They are the numbers that have more than two factors whereas prime numbers have only two factors and that 1 is not considered to be a composite or a prime number

Look up a table of prime numbers. All those numbers that are not prime, are composite - except 1, which is neither prime nor composite.

The set of even numbers contains the prime number, 2. The set of composite numbers contains infinitely many odd numbers.

Including 40 and 50 there are 8 composite numbers because 41, 43 and 47 are prime numbers.

All of them except 83, 89 and 97 which are prime numbers