Q545
If (12n + 1) is divisible by 13, then n is :
A.
1 only
B.
12 only
C.
Any odd integer
AnswerD.
Any even integer
Answer: Option C
Solution
Answer: Option C
Solution:
(xn + an) is divisible by (x + a) when n is odd.∴ (12n + 1) is divisible by (12 + 1) i.e., 13 when n is odd.