Which of the following numbers would be classified as a prime number?
A) 77
B) 65
C) 79 (Correct Answer)
D) 87
Explanation:
The only factors of 79 are 1 and 79, so 79 would be classified as a prime number. The other three numbers listed are composite numbers. (77 = 7 x 11, 65 = 13 x 5, 87 = 29 x 3)
Related Common Core State Standard: Operations & Algebraic Thinking: 4.OA.4
