Question

Lucas says that 15 is both a prime number and a composite number. State whether you agree or disagree with Lucas, and be sure to give a definition of either a prime or composite number to strengthen your argument. (2 points) BoldItalicUnderlineIncrease indentDecrease indent

Answer 1

I disagree with Lucas. 15 is not a prime number; it is a composite number.

A prime number is a positive integer greater than 1 that has no positive divisors other than 1 and itself. In other words, a prime number cannot be divided evenly by any other numbers except 1 and itself.

On the other hand, a composite number is a positive integer that has at least one positive divisor other than 1 and itself. In simpler terms, a composite number can be divided evenly by other numbers besides 1 and itself.

In the case of 15, it can be divided evenly by 1, 3, 5, and 15. Since it has divisors other than 1 and itself, 15 is a composite number, not a prime number.