When a positive integer 'n' is divided by 12, the remainder is 5. What will be the remainder if 8n²+7 is divided by 12?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 3
Explanation:
Let the positive integer be 17.
Now according to the given question,
8n²+7 is divided by 12
⇒ 8(289) + 7 = 2319 is divided by 12
⇒ (12 × 193 + 3) is divided by 12
So, the remainder is 3.
Hence the required answer is 3.