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How many (3)-digit odd numbers can be formed from digits (2,4,6,8,9) without repetition?अंकों (2,4,6,8,9) से बिना पुनरावृत्ति कितनी (3)-अंकीय विषम संख्याएँ बनेंगी?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (12)(12)
Only (9) can be in the units place, and the other two places can be filled in (4\times3=12) ways. For odd numbers, check the units place first.इकाई स्थान पर केवल (9) आएगा और बाकी दो स्थान (4\times3=12) तरीकों से भरेंगे। odd number में इकाई स्थान पहले देखें।
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