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How many (3)-digit numbers can be formed from digits (3,4,5,6) without repetition?अंकों (3,4,5,6) से बिना पुनरावृत्ति कितनी (3)-अंकीय संख्याएँ बन सकती हैं?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (24)(24)
For three places, there are (4\times3\times2=24) ways. Without repetition, choices decrease at each next place.तीन स्थानों के लिए (4\times3\times2=24) तरीके हैं। बिना पुनरावृत्ति में हर अगले स्थान पर विकल्प घटता है।
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