00:01
Now in this problem we are given that in a bag there are three kinds of marble.
00:07
The first one we have a three blue marble and five yellow marble and seven red marbles.
00:15
Now you are choosing two marbles from this box or from this bag without replacement, without replacing the first and we need to find that what is the probability of choosing two blue marbles.
00:31
So this is a question.
00:33
Now the total number of marbles in the bag is a 7 plus 5 plus 13.
00:39
So this would be 15 marbles.
00:41
Total number of marbles are 15.
00:44
Now in the first event we need to find we need to choose a blue marble from these 15 marbles.
00:51
So what would be the probability? there are three marbles, three blue marbles.
00:56
So three divide with the total number of marbles which is 15.
00:59
So this would be equals to 1 over 5.
01:01
Now when one blue marble is being taken there are two blue marbles left in the box...