Just 15.
The factors of 60 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60. The odd composite factor is 15.
The odd composite factors of 90 are: 9, 15, 45
It is impossible to list the infinite number of composite odd numbers.
25.
Just 15.
The factors of 60 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60. The odd composite factor is 15.
The odd composite factors of 90 are: 9, 15, 45
It is impossible to list the infinite number of composite odd numbers.
25.
The composite factors of 60 are: 4, 6, 10, 12, 15, 20, 30, 60.
Just 15.
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.
Composite numbers can have either an odd number or an even number of fractions. Factors of 25 are 1, 5, 25 . (odd number of them) Factors of 26 are 1, 2, 13, and 26 . (even number of them)
Any positive integer with more than two factors is composite.
Incorrect. Square numbers are composite and have an odd number of factors.
60 is a composite number. 60 has integer factors other than itself and 1.