Dhaka Secondary 2010/4
Forum rules
Please don't post problems (by starting a topic) in the "Secondary: Solved" forum. This forum is only for showcasing the problems for the convenience of the users. You can post the problems in the main Divisional Math Olympiad forum. Later we shall move that topic with proper formatting, and post in the resource section.
Please don't post problems (by starting a topic) in the "Secondary: Solved" forum. This forum is only for showcasing the problems for the convenience of the users. You can post the problems in the main Divisional Math Olympiad forum. Later we shall move that topic with proper formatting, and post in the resource section.
In how many ways can four different numbers be arranged so that they are not arranged in increasing or decreasing order?
- leonardo shawon
- Posts:169
- Joined:Sat Jan 01, 2011 4:59 pm
- Location:Dhaka
Re: Dhaka Secondary 2010/4
4! - 2= 22
we can arrange 4 different numbers in 4! Ways. And there 2 numbers in increasing and decreasing order.. So the result is 4!-2=22
we can arrange 4 different numbers in 4! Ways. And there 2 numbers in increasing and decreasing order.. So the result is 4!-2=22
Ibtehaz Shawon
BRAC University.
long way to go .....
BRAC University.
long way to go .....