(12) विद्यार्थियों में से (5) की समिति बनानी है, लेकिन दो विशेष विद्यार्थी साथ-साथ ही चुने जा सकते हैं। कितनी समितियां बनेंगी?
A committee of (5) is to be formed from (12) students, but two particular students can be selected only together. How many committees are possible?
Explanation opens after your attempt
C. (372)
Concept
If both special students are selected, count \(^{10}C_{3}\); if both are not selected, count \(^{10}C_{5}\). Total (120+252=372).
Why this answer is correct
The correct answer is C. (372). If both special students are selected, count \(^{10}C_{3}\); if both are not selected, count \(^{10}C_{5}\). Total (120+252=372).
Exam Tip
दोनों विशेष चुने जाएं तो \(^{10}C_{3}\), और दोनों न चुने जाएं तो \(^{10}C_{5}\)। कुल (120+252=372)।
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