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How many (1)-digit numbers can be formed from digits (1,3,5,7,9) without repetition?अंकों (1,3,5,7,9) से बिना पुनरावृत्ति कितनी (1)-अंकीय संख्याएँ बनेंगी?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (5)(5)
There are (5) choices for one place, so the answer is (5). For a one-place arrangement, available choices are the answer.एक स्थान के लिए (5) विकल्प हैं इसलिए उत्तर (5) है। (1)-स्थान वाली व्यवस्था में उपलब्ध विकल्प ही उत्तर होते हैं।
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