Binomial Theorem And Its Simple Applications Question 81
Question: $ 10^{n}+3({4^{n+2}})+5 $ is divisible by $ (n\in N) $
Options:
A) 7
B) 5
C) 9
D) 17
Show Answer
Answer:
Correct Answer: C
Solution:
- [c] $ 10^{n}+3({4^{n+2}})+5 $ Taking $ n=2;10^{2}+3\times 4^{4}+5 $
$ =100+768+5=873 $ Therefore this is divisible by 9.
BETA
