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How many (4)-digit numbers divisible by (5) can be formed from digits (0,1,2,3,4,5) without repetition?अंकों (0,1,2,3,4,5) से बिना पुनरावृत्ति कितनी (4)-अंकीय संख्याएं बनेंगी जो (5) से विभाज्य हों?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (108)(108)
The last digit must be (0) or (5), and the leading zero case must be counted separately. For such questions, start with the unit digit.अंतिम अंक (0) या (5) होगा और पहले अंक के शून्य होने की स्थिति अलग गिननी होगी। ऐसे प्रश्नों में अंतिम अंक से केस बनाएं।
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