有两把不同的锁和三把钥匙，其中两把钥匙恰好分别能打开这两把锁

有两把不同的锁和三把钥匙，其中两把钥匙恰好分别能打开这两把锁，第三把钥匙不能打开这两把锁，任意取出一把钥匙去开任意的一把锁，一次打开锁的概率是．

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有两把不同的锁和三把钥匙，其中两把钥匙恰好分别能打开这两把锁

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