(12) लोगों में से (5) चुनने हैं। (3) विशेष लोगों में से ठीक (1) चुना जाना चाहिए। कितने चयन होंगे?

From (12) people, (5) are to be chosen. Exactly (1) of (3) special people must be selected. How many selections are possible?

Explanation opens after your attempt
Correct Answer

B. (378)

Step 1

Concept

Choose (1) special person and the remaining (4) people from the other (9). The number is \(^{3}C_{1}\times{}^{9}C_{4}=378\).

Step 2

Why this answer is correct

The correct answer is B. (378). Choose (1) special person and the remaining (4) people from the other (9). The number is \(^{3}C_{1}\times{}^{9}C_{4}=378\).

Step 3

Exam Tip

विशेष लोगों में से (1) और बाकी (4) लोगों को शेष (9) में से चुनें। संख्या \(^{3}C_{1}\times{}^{9}C_{4}=378\)।

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(12) लोगों में से (5) चुनने हैं। (3) विशेष लोगों में से ठीक (1) चुना जाना चाहिए। कितने चयन होंगे? / From (12) people, (5) are to be chosen. Exactly (1) of (3) special people must be selected. How many selections are possible?

Correct Answer: B. (378). Explanation: विशेष लोगों में से (1) और बाकी (4) लोगों को शेष (9) में से चुनें। संख्या \(^{3}C_{1}\times{}^{9}C_{4}=378\)। / Choose (1) special person and the remaining (4) people from the other (9). The number is \(^{3}C_{1}\times{}^{9}C_{4}=378\).

Which concept should I revise for this Mathematics MCQ?

Choose (1) special person and the remaining (4) people from the other (9). The number is \(^{3}C_{1}\times{}^{9}C_{4}=378\).

What exam hint can help solve this Mathematics question?

विशेष लोगों में से (1) और बाकी (4) लोगों को शेष (9) में से चुनें। संख्या \(^{3}C_{1}\times{}^{9}C_{4}=378\)।