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Member Since: Apr 23, 2013
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abr
23
2013
Site para mim os cálculos, juntamente com uma boa explicação.
* Três pessoas entraram num ônibus com 6 lugares vagos. De quantas maneiras diferentes as três pessoas podem ocupar esses lugares ? * Numa reunião tem 24 pessoas se cumprimentando entre si, quantos...
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