Just 15.
Just 15.
there are infinity odd composite numbers
A composite factor is a factor that is a composite number, as opposed to a prime factor which is a factor that is a prime number.
The odd composite factors of 90 are: 9, 15, 45
Just 15.
Just 15.
Some. Any product of a set of odd numbers will be odd. To be even, a composite number must have at least one even factor. Therefore odd composite numbers must exist.
60 is an even composite number. It ends with 0, making it an even number, and all even numbers over 2 are composite numbers.
The pairs are odd/even and prime/composite. For example, 9 is both odd and composite, whereas 2 is even and prime. (2 is the only even prime.) However, 20=22*5 is composite because it has factors other than itself and one. It is also even, aka not odd, as it has a factor of 2.
4, 6, 10, 12, 15, 20, 30, 60
1, 3, 5, 15
there is no pair factors of the # seven. seven is a odd and composite #.
1, 3, 5 and 15.
You are 54.
57
1 is not a compositenumber, it is an odd number