(11) अभ्यर्थियों में से अध्यक्ष और सचिव चुनने के तरीके कितने हैं?
In how many ways can a president and secretary be chosen from (11) candidates?
Explanation opens after your attempt
C. (110)
Concept
The two posts are distinct, so \({}^{11}P_{2}=11\times10=110\). Use permutation for distinct posts.
Why this answer is correct
The correct answer is C. (110). The two posts are distinct, so \({}^{11}P_{2}=11\times10=110\). Use permutation for distinct posts.
Exam Tip
दो पद अलग हैं इसलिए \({}^{11}P_{2}=11\times10=110\)। अलग पदों के लिए क्रमचय लगाएं।
Login to save your score, XP, coins and progress.
