यदि (3) पुस्तकों को (8) पुस्तकों में से चुनकर क्रम में रखना हो तो कौन-सा expression सही है?

If (3) books are chosen from (8) books and placed in order which expression is correct?

Explanation opens after your attempt
Correct Answer

B. \(^{8}C_3\times3!\)

Step 1

Concept

First choose (3) books and then order them in (3!) ways. In exams add arrangement after selection when ordered placement appears.

Step 2

Why this answer is correct

The correct answer is B. \(^{8}C_3\times3!\). First choose (3) books and then order them in (3!) ways. In exams add arrangement after selection when ordered placement appears.

Step 3

Exam Tip

पहले (3) पुस्तकें चुनें और फिर (3!) तरीकों से क्रम दें। परीक्षा में ordered placement हो तो चयन के बाद व्यवस्था जोड़ें।

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Mathematics Answer, Explanation and Revision Hints

यदि (3) पुस्तकों को (8) पुस्तकों में से चुनकर क्रम में रखना हो तो कौन-सा expression सही है? / If (3) books are chosen from (8) books and placed in order which expression is correct?

Correct Answer: B. \(^{8}C_3\times3!\). Explanation: पहले (3) पुस्तकें चुनें और फिर (3!) तरीकों से क्रम दें। परीक्षा में ordered placement हो तो चयन के बाद व्यवस्था जोड़ें। / First choose (3) books and then order them in (3!) ways. In exams add arrangement after selection when ordered placement appears.

Which concept should I revise for this Mathematics MCQ?

First choose (3) books and then order them in (3!) ways. In exams add arrangement after selection when ordered placement appears.

What exam hint can help solve this Mathematics question?

पहले (3) पुस्तकें चुनें और फिर (3!) तरीकों से क्रम दें। परीक्षा में ordered placement हो तो चयन के बाद व्यवस्था जोड़ें।