Binomial Theorem And Its Simple Applications Question 70
Question: If $ \frac{(n+2)!}{6(n-1)!} $ divisible by n, $ n\in N $ and $ 1\le n\le 9, $ Then n is
Options:
A) 4
B) 2
C) 6
D) 1
Show Answer
Answer:
Correct Answer: D
Solution:
- [d] If $ n=1 $ , then $ \frac{(n+2)!}{6(n-1)!}=\frac{3!}{6\times 0!}=\frac{6}{6}=1, $ divisible by 1.
BETA
