00:01
In this question we have been given that there are 8 balls, right? so here we can write there are 8 balls and out of these 8 balls 5 are red.
00:11
So here we can write 5 red and then the remaining ones is 3.
00:17
So these 3 balls are blue, right? so a sample of n is equal to 3 balls are drawn without replacement from 8 balls.
00:27
So here we can say that suppose x denote number of blue balls.
00:32
So here we can write denote the blue balls in the sample.
00:37
Then in that case we can say that the possible values of x can be here equals to 0, 1, 2 and then here it is 3.
00:48
So if the sample of n ball contains x blue ball, then it will contain n minus x red ball, right? so, here we can just write this one over here as if n is equal to 8, then in that case we can say that if m value is here equals to 5, then here the value of n minus 5 can be written or we can say that it is basically n minus m.
01:18
So it will be equals to 3.
01:20
Now we can say that it denotes our x value and here we can say that it denotes our basically n minus x value or it can be written over here as it will be basically 8 minus 3.
01:36
Right.
01:37
So from this very information we can say that the probability of x is equal to x will be here given by, we can write it as such and it will be here equals to mn minus x.
01:50
So it can be written like this and now here it will be n minus m and then here we can write it will be basically x.
02:01
So in the denominator we are going to have n and then here it is n...