Because it can be divided by more than two factors.
It is, because it is evenly divisible by 3.
Yes, it has more than two factors.
15 is composite.
Composite.
15 is a composite number - it is the product of 3 and 5. (3*5=15)
2 is a prime number and 15 is a composite number.
No, 13 is a prime number and 15 is a composite number. A composite number is a positive integer that has more than two positive divisors.
15 is composite.
15 is the only composite factor of 15.
15 is the only composite factor of 15.Just 15
15 is a composite number. 11 is a prime number.
15 and 16 are both composite numbers
composite
Composite.
15 is a composite having the factors 1, 3, 5, and 15.
15 is a composite. Its factors are 1, 3, 5, and 15.
15 is a composite number - it is the product of 3 and 5. (3*5=15)
2 is a prime number and 15 is a composite number.
no 5 is not a composite number 10 15 20 and 25 are composite