Consider the numbers 13, 16, 27, and 41.
a. Which of these numbers are prime? How do you know?
b. Which of these numbers are composite? How do you know? (2 points)
a. The numbers 13 and 41 are prime. 13 is prime because it is only divisible by 1 and 13. 41 is also prime because it is only divisible by 1 and 41.
b. The numbers 16 and 27 are composite. 16 is composite because it is divisible by 1, 2, 4, 8, and 16. 27 is also composite because it is divisible by 1, 3, 9, and 27.