Let's start with the facts. There are 52 cards in a deck, half are red, half are black, there are 12 face cards: four of them are jacks, four of them are queens, and four of them are kings, and there are four different suits. Let's Play!
If a card is selected from this ordinary deck of cards, what is the probability of picking a queen?
There are a total of 4 queens and 52 total cards right? Then 4 times out of 52 times you pick a card, you will draw a queen.
Let's make it a little more interesting!
What's the probability of drawing a queen or an ace?
We already know the probability of drawing a queen is 4 out of 52 and the probability of drawing an ace is also 4/52. These two events are mutually exclusive because they have no elements in common and therefore cannot occur at the same time. In this case we add the probabilities. This gives us 8 out of 52 times we draw a card it will be either an ace or a queen.
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I think you did an excellent job at explaining this concept but you did forget to simplify your answer, which I am sure our teacher caught. When the answer is simplified it gives you a better picture of the probability of the event happening.
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