(8) अभ्यर्थियों में से (3) का चयन करना है, पर एक विशेष अभ्यर्थी अवश्य चुना जाए। कितने तरीके होंगे?

From (8) candidates, (3) are to be selected, but one particular candidate must be included. How many ways are possible?

Explanation opens after your attempt
Correct Answer

B. (21)

Step 1

Concept

Fix the particular candidate and choose remaining (2) from (7). The number is \(^{7}C_{2}=21\).

Step 2

Why this answer is correct

The correct answer is B. (21). Fix the particular candidate and choose remaining (2) from (7). The number is \(^{7}C_{2}=21\).

Step 3

Exam Tip

विशेष अभ्यर्थी को निश्चित मानें और बाकी (2) को (7) में से चुनें। संख्या \(^{7}C_{2}=21\)।

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Mathematics Answer, Explanation and Revision Hints

(8) अभ्यर्थियों में से (3) का चयन करना है, पर एक विशेष अभ्यर्थी अवश्य चुना जाए। कितने तरीके होंगे? / From (8) candidates, (3) are to be selected, but one particular candidate must be included. How many ways are possible?

Correct Answer: B. (21). Explanation: विशेष अभ्यर्थी को निश्चित मानें और बाकी (2) को (7) में से चुनें। संख्या \(^{7}C_{2}=21\)। / Fix the particular candidate and choose remaining (2) from (7). The number is \(^{7}C_{2}=21\).

Which concept should I revise for this Mathematics MCQ?

Fix the particular candidate and choose remaining (2) from (7). The number is \(^{7}C_{2}=21\).

What exam hint can help solve this Mathematics question?

विशेष अभ्यर्थी को निश्चित मानें और बाकी (2) को (7) में से चुनें। संख्या \(^{7}C_{2}=21\)।