mhorse6500 mhorse6500

08-11-2017
Mathematics

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A box contains five keys, only one of which will open a lock. keys are randomly selected and tried, one at a time, until the lock is opened (keys that do not work are discarded before another is tried). let y be the number of the trial on which the lock is opened

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addieszuggar addieszuggar

08-11-2017

each key is 1/5 the way for the door to be open

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