अंकों (0,1,2,3,4,5,6) से बिना पुनरावृत्ति (4)-अंकीय सम संख्याएं कितनी बनेंगी?
Using the digits (0,1,2,3,4,5,6) without repetition how many (4)-digit even numbers can be formed?
Explanation opens after your attempt
C. (300) संख्याएं(300) numbers
Concept
If the last digit is (0) there are \(6 \times 5 \times 4=120\) ways and if it is (2,4,6) there are \(3 \times 5 \times 5 \times 4=300\) ways. The total is (420).
Why this answer is correct
The correct answer is C. (300) संख्याएं / (300) numbers. If the last digit is (0) there are \(6 \times 5 \times 4=120\) ways and if it is (2,4,6) there are \(3 \times 5 \times 5 \times 4=300\) ways. The total is (420).
Exam Tip
अंतिम अंक (0) हो तो \(6 \times 5 \times 4=120\) तरीके हैं और अंतिम अंक (2,4,6) हो तो \(3 \times 5 \times 5 \times 4=300\) तरीके हैं। कुल (420) है।
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