(8) लोगों की सभा में कितने हाथ मिलाने होंगे यदि हर जोड़ा ठीक एक बार हाथ मिलाए?

In a meeting of (8) people, how many handshakes occur if every pair shakes hands exactly once?

Explanation opens after your attempt
Correct Answer

B. (28)

Step 1

Concept

Each handshake corresponds to choosing (2) people. Hence the number is \(^{8}C_{2}=28\).

Step 2

Why this answer is correct

The correct answer is B. (28). Each handshake corresponds to choosing (2) people. Hence the number is \(^{8}C_{2}=28\).

Step 3

Exam Tip

हर हाथ मिलाना (2) लोगों के चयन के बराबर है। इसलिए संख्या \(^{8}C_{2}=28\)।

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Mathematics Answer, Explanation and Revision Hints

(8) लोगों की सभा में कितने हाथ मिलाने होंगे यदि हर जोड़ा ठीक एक बार हाथ मिलाए? / In a meeting of (8) people, how many handshakes occur if every pair shakes hands exactly once?

Correct Answer: B. (28). Explanation: हर हाथ मिलाना (2) लोगों के चयन के बराबर है। इसलिए संख्या \(^{8}C_{2}=28\)। / Each handshake corresponds to choosing (2) people. Hence the number is \(^{8}C_{2}=28\).

Which concept should I revise for this Mathematics MCQ?

Each handshake corresponds to choosing (2) people. Hence the number is \(^{8}C_{2}=28\).

What exam hint can help solve this Mathematics question?

हर हाथ मिलाना (2) लोगों के चयन के बराबर है। इसलिए संख्या \(^{8}C_{2}=28\)।