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1, 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20

Q: What numbers from 1 to 20 are not prime numbers?

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The prime numbers from 1 - 20 are 2, 3, 5, 7, 11, 13, 17, and 19.

It is 75.

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2, 3, 5, 7, 11, 13, 17, 19 ARE prime numbers! 1, 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20 are NOT prime numbers!

NO. There are more prime numbers between 1 and 100 than the prime numbers between 101 and 200.number of prime numbers between 1 and 100 = 25number of prime numbers between 101 and 200 = 20

Related questions

These are the prime numbers 1-20 2,3,5,7,11,13,17,19

2/5 of the numbers from 1 to 20 are prime numbers

Prime numbers are numbers that can only be divided by one and itself. The answer is 2,3,5,7,11,13,17,19. 1 is not prime nor composite.

The prime numbers between 1 and 20 are 2, 3, 5, 7, 11, 13, 17, and 19.

There are eight prime numbers from 1 to 20: 2 3 5 7 11 13 17 19

The prime numbers from 1 - 20 are 2, 3, 5, 7, 11, 13, 17, and 19.

There are 8 prime numbers between 1 and 20. The numbers are 2, 3, 5, 7, 11, 13, 17, and 19.

Prime numbers only have factors of 1 and themselves: 23, 29

The Prime Numbers in the 20's are 23 and 29 because they are only divisible by 1 and the number itself.

There are 8 out of 20 numbers that are prime, so 8/20, or 2/5.

The prime numbers from 1 to 20 are 2, 3, 5, 7, 11, 13, 17, and 19. The original answer incorrectly included 1, 9, and 15.

It is 75.