यदि ( \frac{(n+3)!-(n+2)!}{(n+1)!}=49 ), तो (n) का मान क्या होगा?

If ( \frac{(n+3)!-(n+2)!}{(n+1)!}=49 ), what will be the value of (n)?

Explanation opens after your attempt
Correct Answer

D. (5)

Step 1

Concept

The expression becomes ((n+2)2), so ((n+2)2=49) and (n=5). Simplify the subtraction first.

Step 2

Why this answer is correct

The correct answer is D. (5). The expression becomes ((n+2)2), so ((n+2)2=49) and (n=5). Simplify the subtraction first.

Step 3

Exam Tip

अभिव्यक्ति ((n+2)2) बनती है, इसलिए ((n+2)2=49) और (n=5)। पहले घटाव को सरल करें।

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Mathematics Answer, Explanation and Revision Hints

यदि ( \frac{(n+3)!-(n+2)!}{(n+1)!}=49 ), तो (n) का मान क्या होगा? / If ( \frac{(n+3)!-(n+2)!}{(n+1)!}=49 ), what will be the value of (n)?

Correct Answer: D. (5). Explanation: अभिव्यक्ति ((n+2)2) बनती है, इसलिए ((n+2)2=49) और (n=5)। पहले घटाव को सरल करें। / The expression becomes ((n+2)2), so ((n+2)2=49) and (n=5). Simplify the subtraction first.

Which concept should I revise for this Mathematics MCQ?

The expression becomes ((n+2)2), so ((n+2)2=49) and (n=5). Simplify the subtraction first.

What exam hint can help solve this Mathematics question?

अभिव्यक्ति ((n+2)2) बनती है, इसलिए ((n+2)2=49) और (n=5)। पहले घटाव को सरल करें।