Not all numbers between 20 and 28 are composite numbers. 23 is a prime number.
All of them except 23 and 29 which are prime numbers
Both are prime numbers
All of them except 23 and 29 which are prime numbers
All of them except for 23 and 29 which are prime numbers.
19 and 23 are prime numbers whereas 21 is a composite number
If you mean: 23 25 and 29 then 23 and 29 are prime numbers while 25 is composite.
They are prime numbers.
23, 29 and 31 are prime. The rest are composite.
23 and 27 are prime numbers whereas 36 and 39 are composite numbers.
No, they are three numbers, not one. 21 is composite.
23 is a prime number. 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.