द प्रोबेबिलिटी ऑफ शूज इन द कोऑर्डिनेटर आउट ऑफ द गिवन क्वॉड्रिलैटरल्स हेविंग ओनली सपोर्ट्स आईटी कॉलेज
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There are 12 pairs of shoes in a cupboard. 4 are drawn at random. What is the probability that there is at least one pair? My first attempt: If we chose ...
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