00:01
In this question, we're given a standard deck of 52 plain cards and a five cut hand is drawn from the deck.
00:06
Now take note that the cards are drawn without replacement.
00:13
After they are drawn, there's no arrangement, so the order is not important.
00:23
So without replacement, order not important, we will be using combination.
00:28
And that's the one with the c.
00:31
Now, in a, you want to find probability the hand contained at least one spake.
00:36
I'm going to take one minus the complement to this case will be probably.
00:39
That there is no spade in these five cards.
00:45
So take note that the number of spades in the deck is 13.
00:52
So the non -spades will be 52 minus 13, and that's 39 of them.
01:02
So from the 39 non -spades, i'm going to choose five cards.
01:05
My probability always divide by the total number possible ways, in this case, to choose five cards with no restriction.
01:13
That means i do not care whether there are spades, or not spades or anything...