Question
Download Solution PDFऐसी कितनी चार अंक वाली धनपूर्ण संख्याएं हैं, जिनके सभी अंक विषम हैं?
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विषम अंक - 1, 3, 5, 7, 9
एक चार अंकों की संख्या जिसमें सभी अंक विषम हैं, पहले स्थान पर 5 विकल्प हैं, और चूंकि अंकों को दोहराया जा सकता है, दूसरे, तीसरे और चौथे स्थान के लिए भी 5 विकल्प हैं।
तो, चार अंकों वाली प्राकृत संख्याओं की संख्या इस प्रकार है कि सभी अंक विषम हैं = 5 × 5 × 5 × 5 = 625
Last updated on May 30, 2025
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