Class 11 Mathematics Permutations and Combinations Derivations of formulas and their connections Hard Level 64

यदि \(^{9}P_4=9\cdot8\cdot7\cdot6\), तो यह product किस formula से connected है?

If \(^{9}P_4=9\cdot8\cdot7\cdot6\), this product is connected with which formula?

Explanation opens after your attempt
Correct Answer

A. \(\frac{9!}{5!}\)

Step 1

Concept

In the falling product \(9\cdot8\cdot7\cdot6\), the remaining tail (5!) is removed. In exams write the denominator tail after the last chosen factor.

Step 2

Why this answer is correct

The correct answer is A. \(\frac{9!}{5!}\). In the falling product \(9\cdot8\cdot7\cdot6\), the remaining tail (5!) is removed. In exams write the denominator tail after the last chosen factor.

Step 3

Exam Tip

Falling product \(9\cdot8\cdot7\cdot6\) में बाकी tail (5!) हटता है। परीक्षा में last chosen factor के बाद denominator tail लिखें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(^{9}P_4=9\cdot8\cdot7\cdot6\), तो यह product किस formula से connected है? / If \(^{9}P_4=9\cdot8\cdot7\cdot6\), this product is connected with which formula?

Correct Answer: A. \(\frac{9!}{5!}\). Explanation: Falling product \(9\cdot8\cdot7\cdot6\) में बाकी tail (5!) हटता है। परीक्षा में last chosen factor के बाद denominator tail लिखें। / In the falling product \(9\cdot8\cdot7\cdot6\), the remaining tail (5!) is removed. In exams write the denominator tail after the last chosen factor.

Which concept should I revise for this Mathematics MCQ?

In the falling product \(9\cdot8\cdot7\cdot6\), the remaining tail (5!) is removed. In exams write the denominator tail after the last chosen factor.

What exam hint can help solve this Mathematics question?

Falling product \(9\cdot8\cdot7\cdot6\) में बाकी tail (5!) हटता है। परीक्षा में last chosen factor के बाद denominator tail लिखें।