अंकों (0,1,2,3,4,5,6,7,8) से बिना पुनरावृत्ति (4)-अंकीय विषम संख्याएं कितनी बनेंगी?
Using the digits (0,1,2,3,4,5,6,7,8) without repetition how many (4)-digit odd numbers can be formed?
Explanation opens after your attempt
C. (1176) संख्याएं(1176) numbers
Concept
There are (4) choices (1,3,5,7) for the last place and then (7) non-zero choices remain for the first place. The other two places have (7) and (6) choices so the total is \(4 \times 7 \times 7 \times 6=1176\).
Why this answer is correct
The correct answer is C. (1176) संख्याएं / (1176) numbers. There are (4) choices (1,3,5,7) for the last place and then (7) non-zero choices remain for the first place. The other two places have (7) and (6) choices so the total is \(4 \times 7 \times 7 \times 6=1176\).
Exam Tip
अंतिम स्थान के लिए (1,3,5,7) के (4) विकल्प हैं और पहले स्थान के लिए फिर (7) गैर-शून्य विकल्प बचते हैं। बाकी दो स्थानों पर (7) और (6) विकल्प हैं इसलिए कुल \(4 \times 7 \times 7 \times 6=1176\) है।
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