Mathematics, 30.09.2019 22:10 matthewquattlebum
Aman has n keys on a key ring, one of which opens the door to his apartment. having celebrated a bit too much one evening, he returns home only to find himself unable to distinguish one key from another. resourceful, he works out a fiendishly clever plan: he will choose a key at random and try it. if it fails to open the door, he will discard it and choose at random one of the remaining n−1 keys, and so on. clearly, the probability that he gains entrance with the first key he selects is 1/n. show that theprobability the door opens with the third key he tries is also 1/n.
Answers: 3
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Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?
Answers: 1
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Point a (7,3) is translated to a'(16,-9). which rule describes the translation?
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Aman has n keys on a key ring, one of which opens the door to his apartment. having celebrated a bit...
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