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OpenStudy (anonymous):
Victoria selects a card at random from a box of blank greeting cards. The box has 5 "Happy Birthday" cards, "Thank You" cards, and 4 "Get Well Soon" cards. What is the probability that she selects a "Happy Birthday" or "Get Well Soon" card?
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OpenStudy (anonymous):
how many thank you cards are there?
OpenStudy (anonymous):
you must know the total amount of cards if you want to find the probability of something happening
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