Mathematics, 25.05.2021 19:40, stephstewart1209

Sarah has 7 keys. Two of the keys unlock her desk drawer. If the first key she randomly chooses does not open the lock and she sets it aside, what is the probability that the second key she randomly chooses will unlock the drawer

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Sarah has 7 keys. Two of the keys unlock her desk drawer. If the first key she randomly chooses does...