00:01
So in the following problem, we haven't given a scenario regarding cards being drawn from a deck of 52 cards.
00:11
So we have 52 cards and 7 are drawn at the same time.
00:34
So in part a, we've been asked to find the sample space.
00:39
I guess the answer has been given to us, but i'll still write it.
00:43
And the size of the sample space is basically, you know, the set of all possible outcomes that are happening.
00:53
So in our event, we are drawing seven cards simultaneously from 52.
00:58
So our sample space would be 52 to 7.
01:03
In part b, we're being told that find the probability that at least three of the cards drawn are red.
01:13
So the probability okay so let this event actually let this event be r i .e.
01:32
At least three cards red.
01:36
So therefore probability of r is basically the probability that three cards are red plus the probability that.
01:59
Probability that four cards.
02:06
Let's see if there's an easier way to write this.
02:08
So we want at least three cards red.
02:13
So the minimum number of red cards that we should draw from our seven should be three and the max could be like all the seven cards.
02:21
So firstly, let's state a few things.
02:25
So in a deck of cards, we have 26 red and 26 black cards.
02:34
Right? all in all...