(12) विद्यार्थियों में से (5) की समिति और (7) का बाकी समूह बनाने की संख्या कौन-सी है?
What is the number of ways to make a committee of (5) and a remaining group of (7) from (12) students?
Explanation opens after your attempt
Correct Answer
A. \(^{12}C_5\)
Concept
Once the committee of (5) is chosen the remaining (7) students are fixed. In exams use only one combination when the complement group is fixed automatically.
Why this answer is correct
The correct answer is A. \(^{12}C_5\). Once the committee of (5) is chosen the remaining (7) students are fixed. In exams use only one combination when the complement group is fixed automatically.
Exam Tip
(5) की समिति चुनते ही बाकी (7) विद्यार्थी तय हो जाते हैं। परीक्षा में complement group खुद तय हो तो केवल एक combination लगाएँ।
Login to save your score, XP, coins and progress.