Select the answer from the choices below that best describes the number 13:
Prime
Composite
Both prime and composite
Neither

Question

Select the answer from the choices below that best describes the number 13:  
    Prime  
   Composite 
   Both prime and composite  
   Neither

anonymous · Answer

Prime numbers are numbers that can only be divided wholly by itself, and 1.  Example: 17 (17 can be divided by 1 and 17)

Composite numbers are the opposites of prime numbers.  They can be divided by other numbers as well.  Example: 8 (8 can be divided by 1, 2, 4, and 8).

A number cannot be BOTH prime and composite.  Do you know if 13 is prime or composite?

anonymous · Answer

its prime

anonymous · Answer

Right, so that's the answer! By definition, a composite number is the opposite of a prime number.

anonymous · Answer

okay so its prime