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Q: Which is a prime numbers 21 23 25 or 27?

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They are all prime numbers except for 15 21 25 and 27 which are composite numbers

3, 13, 17, 23 are prime numbers. The others are not.

31 and 23 are prime numbers.

23 is a prime number.

Only 23 is a prime number.

prime of numbers 21 22 23 24 25 26 27 28 29 30 prime numbers are: 23 & 29 because their factors are only 1 and themselves. factors of: 23= 1, 23 29= 1, 29 22, 24, 25, 26, 27, 28 & 30 are not prime numbers because these numbers have other factors aside from 1 and themselves. Example: factors of 22: 1, 2, 11, 22

The number 21 would be the answer. 19 and 23 only have two factors, 1 and themselves, as they are prime numbers. 25 only has 1, 25 and 5. 21 has 1, 21, 3 and 7 for 4 possible factors.

None of them is a prime number.

21 22 23 24 which is the prime number

The composite numbers between 20 and 25 are 21, 22, and 24. 23 is the only prime number between 20 and 25.

If you mean: 23 25 and 29 then 23 and 29 are prime numbers while 25 is composite.

A twin prime is a prime number that differs from another prime number by two.ex. (5, 7)The numbers two away from 23 are 21 and 25 which are both composite numbers.So in short, no 23 is not a twin prime.

23

23 + 2 = 25

There are 23 numbers in the range and so the fraction is 9/23.

All the numbers are composite except the ones in bold: 18 19 20 21 22 23 24 25.

The prime numbers between 15 and 25 are- 17, 19 and 23.They are: 17, 19 and 23They are: 17 19 and 23

There are 5 prime numbers from 10 to 25:11, 13, 17, 19 and 23

The prime numbers between 10 and 25 are 11, 13, 17, 19, and 23.

The prime numbers between 8 and 25 are: 11 13 17 19 and 23

21

None of them are prime numbers

2 + 23 = 25

23 and 31 are prime numbers whereas 52 33 60 and 25 are composite numbers.

21 = 3 x 7, so it is not a prime number. 23 = 1 x 23, it does not have any other factors, so it is a prime number. 25 = 5 x 5, so it is not a prime number.

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