0:00
High.
00:01
Now a bag contains 4 white, 3 blue and 5 red marbles.
00:09
So in first part we have to find the probability of choosing a red marble then a white marble if marbles are replaced.
00:20
So total marbles over here are 12, 4 plus 3 plus 5 which is 12.
00:26
So now probability of choosing a red marble so this will be 5 by 12 into probability of choosing a white and all the marbles are replaced.
00:36
So again in the bag there are 12 marbles so choosing a white will be 4 by 12.
00:42
So this is the probability.
00:45
Next in part 2, probability of choosing 3 blue marbles in a row if marbles are being replaced.
00:52
Now marbles are replaced.
00:53
So first we have taken a blue so that will be 3 by 12.
00:57
Again we have put that blue in the bag.
00:59
So again the blue marbles are 3.
01:01
So 3 by 12 and again 3 by 12.
01:05
So this is simply equal to 1 by 4 whole cube...