One way to formulate the probability of drawing a queen from a deck of cards is to say that there is a 1 in 13 chance.Another common way to say the same thing is to say that:

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There are 4 queens in a deck of 52 cards, so the probability of drawing a queen is 4/52, which simplifies to 1/13. The odds, however, are calculated as the ratio of the probability of the event occurring to the probability of it not occurring, which is 4:48 or 1:12.

One Way to Formulate the Probability of Drawing a Queen