Mathematics > Standard Multiple Choice
Read the following SAT test question and then click on a button to select your answer.
When the positive integer n is divided by 5, the remainder is 0. What is the remainder when 3 times n is divided by 5?
(A) 0
(B) 1
(C) 2
(D) 3
(E) 4
The correct answer is A
Explanation
Choice (A) is correct. When the positive integer n is divided by 5, the remainder is 0. It follows that n is a multiple of 5. Therefore, 3 times n is also a multiple of 5, and so the remainder when 3 times n is divided by 5 is likewise 0.