00:01
This is a probability question and this is without replacement.
00:04
That means when we just take out one card, we don't just put this card back to the deck.
00:11
So in a deck of cards, there are 52 cards, so the sample space is 52, and the number of spade cards for the deck of cards, which is 13.
00:21
So we're gonna select five cards and we want just exactly two of them are the spade cards.
00:30
Let's say this is the card one, card two, card three, card four, and the card five.
00:37
Let's say the first one is spade, which is 13 over 52, and the next one is also spade, which is 12 over 51, and the next cards would be any number.
00:46
So the number of remaining cards here is 50, which is 50 over, so the number of the cards other one, and the next card would be any card different than spade, which is 39...