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RioAnne
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Babies born in the United States must have a Social Security card issued before their third birthday. How many different cards could be issued using the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9, if each card needs a ninedigit number and the digits can only be used once per card?
http://test.edperformance.com/graphics/math/12355.gif
 2 years ago
 2 years ago
RioAnne Group Title
Babies born in the United States must have a Social Security card issued before their third birthday. How many different cards could be issued using the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9, if each card needs a ninedigit number and the digits can only be used once per card? http://test.edperformance.com/graphics/math/12355.gif
 2 years ago
 2 years ago

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telltoamit Group TitleBest ResponseYou've already chosen the best response.0
each of the 9 places can be filled by any of the 10 digits ex: the first palce can be filled by any of the 10 digits, so 10 options for that similarly, 10 options for the rest so, 10*10*10*10*10*10*10*10*10 = 10^9
 2 years ago

telltoamit Group TitleBest ResponseYou've already chosen the best response.0
welcome!
 2 years ago
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