(18) सदस्यों में से (3) सदस्यों की समिति बनानी है जिसमें एक निश्चित सदस्य अवश्य हो। कितनी समितियां बनेंगी?

A committee of (3) members is to be formed from (18) members with one fixed member included. How many committees are possible?

Explanation opens after your attempt
Correct Answer

A. (136)

Step 1

Concept

Fix the required member first and choose the remaining (2) from (17). The number is \(^{17}C_{2}=136\).

Step 2

Why this answer is correct

The correct answer is A. (136). Fix the required member first and choose the remaining (2) from (17). The number is \(^{17}C_{2}=136\).

Step 3

Exam Tip

निश्चित सदस्य को पहले चुन लें और बाकी (2) को (17) में से चुनें। संख्या \(^{17}C_{2}=136\) है।

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Mathematics Answer, Explanation and Revision Hints

(18) सदस्यों में से (3) सदस्यों की समिति बनानी है जिसमें एक निश्चित सदस्य अवश्य हो। कितनी समितियां बनेंगी? / A committee of (3) members is to be formed from (18) members with one fixed member included. How many committees are possible?

Correct Answer: A. (136). Explanation: निश्चित सदस्य को पहले चुन लें और बाकी (2) को (17) में से चुनें। संख्या \(^{17}C_{2}=136\) है। / Fix the required member first and choose the remaining (2) from (17). The number is \(^{17}C_{2}=136\).

Which concept should I revise for this Mathematics MCQ?

Fix the required member first and choose the remaining (2) from (17). The number is \(^{17}C_{2}=136\).

What exam hint can help solve this Mathematics question?

निश्चित सदस्य को पहले चुन लें और बाकी (2) को (17) में से चुनें। संख्या \(^{17}C_{2}=136\) है।