यदि (7) खिलाड़ियों में से कप्तान और उपकप्तान चुनने हों तो कौन-सा सूत्र लगेगा?
If a captain and vice captain are to be chosen from (7) players which formula is used?
Explanation opens after your attempt
A. \(^{7}P_2\)
Concept
Captain and vice captain are different posts so order is important. In exams use permutation for different posts.
Why this answer is correct
The correct answer is A. \(^{7}P_2\). Captain and vice captain are different posts so order is important. In exams use permutation for different posts.
Exam Tip
कप्तान और उपकप्तान अलग पद हैं इसलिए क्रम महत्वपूर्ण है। परीक्षा में अलग-अलग posts के लिए permutation लगाएँ।
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