-
BTGmoderatorDC
- Moderator
- Posts: 7187
- Joined: Thu Sep 07, 2017 4:43 pm
- Followed by:23 members
If n > 4, what is the value of the integer n ?
(1) \(\frac{n!}{n - 3)!} = \frac{3!n!}{4!(n - 4)!}\)
(2) \(\frac{n!}{3!(n - 3)!} + \frac{n!}{4!(n - 4)!} = \frac{(n + 1)!}{4!(n - 3)!}\)
OA A
Source: Official Guide
(1) \(\frac{n!}{n - 3)!} = \frac{3!n!}{4!(n - 4)!}\)
(2) \(\frac{n!}{3!(n - 3)!} + \frac{n!}{4!(n - 4)!} = \frac{(n + 1)!}{4!(n - 3)!}\)
OA A
Source: Official Guide
