When the integer n is divided by 5, the remainder is 3. What is the remainder if 6n is divided by 5?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 3.
According to the question;
if n = 5k + 3 then
⇒ 6n = 30k + 18
When 30k + 18 is divided by 5, we get
Remainder = 3 (when 18 is divided by 5)