00:01
In your question, you're told a stack of cards contains six red cards that are numbered 1, 2, 3, 4, 5, and 6.
00:11
We then have five blue cards that are numbered 1, 2, 3, 4, 5.
00:21
And we have four green cards that are numbered 1, 2, 3, 4.
00:26
Now your question says a single card is going to be picked at random from the stack that contains those cards, and we want to find the probability that the card has an odd number.
00:40
So to find the probability, we need the number of favorable outcomes, which in this case is going to be odd cards.
00:50
So the number of odd cards divided by the total possible outcomes, or just the total number of cards.
01:00
Now the total number of cards, we know there were 6, 5, and 4, so we add those together, that's 15...