(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
Correct Answer

C. (372)

Step 1

Concept

If both special students are selected, count \(^{10}C_{3}\); if both are not selected, count \(^{10}C_{5}\). Total (120+252=372).

Step 2

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).

Step 3

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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Mathematics Answer, Explanation and Revision Hints

(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?

Correct Answer: C. (372). Explanation: दोनों विशेष चुने जाएं तो \(^{10}C_{3}\), और दोनों न चुने जाएं तो \(^{10}C_{5}\)। कुल (120+252=372)। / If both special students are selected, count \(^{10}C_{3}\); if both are not selected, count \(^{10}C_{5}\). Total (120+252=372).

Which concept should I revise for this Mathematics MCQ?

If both special students are selected, count \(^{10}C_{3}\); if both are not selected, count \(^{10}C_{5}\). Total (120+252=372).

What exam hint can help solve this Mathematics question?

दोनों विशेष चुने जाएं तो \(^{10}C_{3}\), और दोनों न चुने जाएं तो \(^{10}C_{5}\)। कुल (120+252=372)।