00:01
So suppose i have a theatrical group, i want to select two musicals and three dramas.
00:06
So here, since order doesn't matter, right, does not matter the order in which i select the musicals or the dramas, this will be a combination.
00:16
So for my musicals out of 11, i'm choosing two.
00:20
And for my dramas out of eight, i'm choosing three.
00:25
Now the question is here, once i find these numbers, what do i do with them? add them or do i multiply them? well, by the fundamental counting principle, i'm actually going to multiply them because the number of ways times the number of ways of something else.
00:38
I could just multiply them.
00:39
So 11 choose 2.
00:40
This will be the first number factorial over the bottom number, over 11 minus 2 factorial...