composite
10 is the only composite factor of 10.
It is composite because it has more than 2 factors
There are more than ten composite numbers and what they have in common is that they all have more than two factors whereas prime numbers have only two factors which are themselves and one.
One (1) is not a composite number.
All even numbers greater than 2 are composite.
Your options C and D are the same, but it is true that 51 is a composite number.
12
The only prime number in the 90s is 97. So out of ten numbers one is a prime number and the remaining nine numbers are composite numbers. So 90s comprises of both prime numbers and composite numbers.
129 - 112 = 17
ANSWER: One is not a composite number.One is not also a prime number.
1 is neither a prime nor a composite number because it has only one factor (itself (1)). The definition of a prime number is a number that has the factor of one and itself, so one is not prime. The definition of a composite number is a number that has more than 2 factors, so one is not composite. One is a special number.