(10) खिलाड़ियों में से कप्तान, उपकप्तान और विकेटकीपर चुनने के तरीके कितने हैं?
In how many ways can a captain, vice-captain and wicketkeeper be chosen from (10) players?
Explanation opens after your attempt
B. (720)
Concept
The three posts are distinct, so \({}^{10}P_{3}=10\times9\times8=720\). Order matters for different posts.
Why this answer is correct
The correct answer is B. (720). The three posts are distinct, so \({}^{10}P_{3}=10\times9\times8=720\). Order matters for different posts.
Exam Tip
तीन पद अलग हैं इसलिए \({}^{10}P_{3}=10\times9\times8=720\)। अलग पदों में order महत्त्वपूर्ण होता है।
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