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How many (3)-digit numbers can be formed from (1,2,3,4,5) without repetition?अंकों (1,2,3,4,5) से बिना पुनरावृत्ति (3) अंकों की कितनी संख्याएं बनेंगी?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (60)(60)
There are (5,4,3) choices for the three places, so (5\cdot4\cdot3=60). In exams, choices reduce without repetition.तीन स्थानों के लिए (5,4,3) विकल्प हैं, इसलिए (5\cdot4\cdot3=60)। परीक्षा में बिना पुनरावृत्ति में विकल्प घटते हैं।
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