21 is a composite 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.
19 and 23 are prime numbers whereas 21 is a composite number
No, they are three numbers, not one. 21 is composite.
7 and 3 are prime numbers but 21 is a composite nuber
21 is composite as 3 times 7 is 21 31 is prime
yes as they are not prime numbers
19 is prime number. 10, 21 and 62 are composite numbers.
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. 21 is composite.
Out of those 100 numbers, 21 of them are prime numbers, so the remaining (100 - 21) = 79 are composite.
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. 21 is composite.
No. Prime numbers cannot be composite and composite numbers cannot be prime!
21 is composite
21 is composite.