Hey guys, Its me Amandeep kaur  for those who don't know I sit right next to gagan and sargam.


What is factorial notation???
                     :-    For a sequence of numbers from 1 to n, where the sequence is defined by 1 * 2 * 3 * ⋅⋅⋅ * (n−2) * (n−1) * n, the notation is represented by n!. The exclamation mark is read as 'factorial'.

For example

Here is an example of factorial notation......

Solution:-

Here is a video of factorial notation

http://www.youtube.com/watch?v=pIxbYJy6YWA&safe=active


 I hope you guys learn something :)