00:01
So our question says about 10, 7 blue marbles, 3 green marbles and 5 yellow marbles.
00:07
So suppose you draw 2 marbles at random.
00:09
What is the probability that you are going to draw? we are supposed to use this to answer some question with width and with our replacement.
00:16
So the number of blue balls we have, sorry, the number of blue marbles we have 7, the number of green marbles we have 3.
00:22
And the number of yellow marbles we have 5.
00:25
So the probability of, so let's solve our first question.
00:28
The first question is the probability that you pick a blue and then a grain.
00:31
So our first question number one is probability of picking a blue and a green in this order.
00:38
So let us start with with replacement.
00:39
So the purpose of picking a blue is going to be 7 over 15.
00:43
And when the experiment was done in replacement, it means the blue balls was returned back.
00:48
So that means the number of blue balls remains the same...