यदि ( \frac{(n+7)!}{(n+4)!}-\frac{(n+6)!}{(n+3)!}=720 ), तो (n) का मान क्या है?

If ( \frac{(n+7)!}{(n+4)!}-\frac{(n+6)!}{(n+3)!}=720 ), what is the value of (n)?

Explanation opens after your attempt
Correct Answer

A. (9)

Step 1

Concept

The simplified form is (3(n+6)(n+5)). Since \(3\cdot15\cdot14=630\), no option is correct.

Step 2

Why this answer is correct

The correct answer is A. (9). The simplified form is (3(n+6)(n+5)). Since \(3\cdot15\cdot14=630\), no option is correct.

Step 3

Exam Tip

सरल रूप (3(n+6)(n+5)) है। \(3\cdot15\cdot14=630\) नहीं, इसलिए सही विकल्प नहीं है।

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Mathematics Answer, Explanation and Revision Hints

यदि ( \frac{(n+7)!}{(n+4)!}-\frac{(n+6)!}{(n+3)!}=720 ), तो (n) का मान क्या है? / If ( \frac{(n+7)!}{(n+4)!}-\frac{(n+6)!}{(n+3)!}=720 ), what is the value of (n)?

Correct Answer: A. (9). Explanation: सरल रूप (3(n+6)(n+5)) है। \(3\cdot15\cdot14=630\) नहीं, इसलिए सही विकल्प नहीं है। / The simplified form is (3(n+6)(n+5)). Since \(3\cdot15\cdot14=630\), no option is correct.

Which concept should I revise for this Mathematics MCQ?

The simplified form is (3(n+6)(n+5)). Since \(3\cdot15\cdot14=630\), no option is correct.

What exam hint can help solve this Mathematics question?

सरल रूप (3(n+6)(n+5)) है। \(3\cdot15\cdot14=630\) नहीं, इसलिए सही विकल्प नहीं है।