00:01
In this question, we have the captain of a basketball team assigns himself in the fourth place in the shooting order.
00:09
So at least we know this is the fourth place.
00:12
And how many ways can he assign the remaining to his eight teammates? so that means one, two, three.
00:19
There'll be another five slots after here.
00:23
So all together, there are nine slots from the first slot, fourth slot to the ninth.
00:31
The position four is already taken though by the captain.
00:35
So there's just only one way, that is the captain himself.
00:40
So if three men are considered eligible for first position, so for the first position to be filled, it will be from the three men, we choose one.
00:51
Three choose one.
00:53
And now n is times, or is plus.
01:00
So n, there'll be a times.
01:02
For the next two positions here, we have remaining seven people.
01:08
We will choose two.
01:10
And now if i were to choose a and b, but there's also b and a.
01:19
Choosing two is just choosing a, b...