A card is drawn from a well-shuffled deck of 52 cards. How do you find P(drawing an ace or a 9)?

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A card is drawn from a well-shuffled deck of 52 cards. How do you find P(drawing an ace or a 9)?

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Answer 1 · 2016-02-15T07:28:13

#P("ace or 9") = 2/13#

Explanation:

There are two possible events that could happen. Either you draw an ace or a 9. There are four aces in a deck of #52# cards as well as #4# of #9#'s in the same deck. The conjunction "or" implies adding up the probabilities of the individual events . Thus,

#P("ace or 9") = 4/52 + 4/52 = 8/52#

Reduced to lowest terms, the answer is equivalent to #2/13#

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A card is drawn from a well-shuffled deck of 52 cards. How do you find P(drawing an ace or a 9)?

1 Answer

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