14 and 21
No, they are three numbers, not one. 21 is composite.
21 and 32
composite numbers between 11 and 21:12 14 15 16 18
If an odd number has more than two factors then it is a composite number but if it has only two factors then it is a prime number. Although all prime numbers are odd except for 2 many more odd numbers are composite numbers having more than two factors as for example 21 is an odd number whose factors are 1, 3, 7 and 21.
c 15 and 21
14 and 21
14 and 21
No, they are three numbers, not one. 21 is composite.
Not necessarily. For example 15 and 16 are composite numbers. They add to 31, which is a prime number. Similarly, the composite numbers 20 and 21 add up to 41, which is a prime number.
21 and 32
19 is prime number. 10, 21 and 62 are composite numbers.
21 is composite as 3 times 7 is 21 31 is prime
Out of those 100 numbers, 21 of them are prime numbers, so the remaining (100 - 21) = 79 are composite.
composite numbers between 11 and 21:12 14 15 16 18
If an odd number has more than two factors then it is a composite number but if it has only two factors then it is a prime number. Although all prime numbers are odd except for 2 many more odd numbers are composite numbers having more than two factors as for example 21 is an odd number whose factors are 1, 3, 7 and 21.
The composite numbers between 21 and 31 are: 21 22 24 25 26 27 28 30