00:01
Hey there, welcome to numerate.
00:03
Let's say a person draws two cards from a standard deck without replacement.
00:09
What is the probability that at least one of the cards is a face card? so let's first find the probability of drawing a non -face card.
00:19
So non -face.
00:23
What we know here is that we have 12 faces out of the 52.
00:28
So 12 face cards out of the total 52 total cards.
00:37
So if we go ahead and subtract this, this will give us 40 non -face cards, non -faces.
00:46
So therefore, the probability here will be the 40 out of the 52 for non -face.
00:54
Now for the probability setup here that we're looking for at least.
01:00
Least one face card, at least one face.
01:08
This will be the complement rule we'll be using, which is going to be one minus probability of non -face...