Digits (1,2,3,4,5,6) से repetition allowed (5)-digit numbers में exactly (2) odd digits हों, तो count कौन-सी है?
Using digits (1,2,3,4,5,6) with repetition allowed, if exactly (2) odd digits occur in (5)-digit numbers, what is the count?
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A. \(^{5}C_2\cdot3^2\cdot3^3\)
Simple Explanation
Exactly (2) odd positions चुनें, फिर odd और even digits के choices multiply करें। परीक्षा में exactly type digit questions में positions first चुनें। / Choose exactly (2) odd positions, then multiply choices of odd and even digits. In exams choose positions first in exactly-type digit questions.
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