(9) अलग-अलग झंडों में से (4) झंडों का संकेत कितने क्रमों में बनाया जा सकता है?
In how many orders can a signal of (4) flags be made from (9) distinct flags?
Explanation opens after your attempt
A. (3024)
Concept
Order is important in a signal, so \(^{9}P_4=3024\). In exams, words like signal and code usually indicate permutation.
Why this answer is correct
The correct answer is A. (3024). Order is important in a signal, so \(^{9}P_4=3024\). In exams, words like signal and code usually indicate permutation.
Exam Tip
संकेत में क्रम महत्वपूर्ण है, इसलिए \(^{9}P_4=3024\)। परीक्षा में संकेत और कोड जैसे शब्दों में permutation सोचें।
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