यदि ( \frac{(n+1)!-n!}{(n-1)!}=49 ), तो (n) का मान क्या है?

If ( \frac{(n+1)!-n!}{(n-1)!}=49 ), what is the value of (n)?

Explanation opens after your attempt
Correct Answer

C. (7)

Step 1

Concept

From the simplified form, the expression is \(n^2\), so \(n^2=49\) and (n=7). Simplify the algebraic form first.

Step 2

Why this answer is correct

The correct answer is C. (7). From the simplified form, the expression is \(n^2\), so \(n^2=49\) and (n=7). Simplify the algebraic form first.

Step 3

Exam Tip

पिछले रूप से अभिव्यक्ति \(n^2\) है, इसलिए \(n^2=49\) और (n=7)। पहले बीजीय रूप सरल करें।

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Mathematics Answer, Explanation and Revision Hints

यदि ( \frac{(n+1)!-n!}{(n-1)!}=49 ), तो (n) का मान क्या है? / If ( \frac{(n+1)!-n!}{(n-1)!}=49 ), what is the value of (n)?

Correct Answer: C. (7). Explanation: पिछले रूप से अभिव्यक्ति \(n^2\) है, इसलिए \(n^2=49\) और (n=7)। पहले बीजीय रूप सरल करें। / From the simplified form, the expression is \(n^2\), so \(n^2=49\) and (n=7). Simplify the algebraic form first.

Which concept should I revise for this Mathematics MCQ?

From the simplified form, the expression is \(n^2\), so \(n^2=49\) and (n=7). Simplify the algebraic form first.

What exam hint can help solve this Mathematics question?

पिछले रूप से अभिव्यक्ति \(n^2\) है, इसलिए \(n^2=49\) और (n=7)। पहले बीजीय रूप सरल करें।