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How many (6)-digit numbers can be formed from digits (0,1,2,3,4,5,6,7,8,9) without repetition if the first digit is even and the last digit is odd?अंकों (0,1,2,3,4,5,6,7,8,9) से बिना पुनरावृत्ति कितनी (6)-अंकीय संख्याएं बनेंगी जिनका पहला अंक सम और अंतिम अंक विषम हो?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (33600)(33600)
The first digit must be even but not (0), the last digit must be odd, and the middle (4) places are filled from remaining digits. Always check the leading zero restriction.पहला अंक सम लेकिन (0) नहीं हो सकता, अंतिम अंक विषम होगा और बीच के (4) स्थान बचे अंकों से भरेंगे। अग्र शून्य की शर्त जरूर जांचें।
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