Answer to Question #15831 in Statistics and Probability for Amie
P(spade) = 13/52 = 1/4.
There are 4 queens in a deck, so the probability to choose a queen is
P(queen) = 4/52 = 1/13.
The probability to choose the queen of spades is
P(queen of spades) = 1/52.
P(spade or queen) = P(spade) + P(queen) - P(queen of spades) = 1/4 + 1/13 - 1/52 = 4/13 ≈ 0.308.
So, the probability that the card you select is a spade or Queen is about .308.
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