\(\frac{22!-21!}{20!}\) का मान क्या है?

What is the value of \(\frac{22!-21!}{20!}\)?

Explanation opens after your attempt
Correct Answer

B. (441)

Step 1

Concept

(22!-21!=21!(22-1)). Dividing by (20!) gives \(21\times21=441\).

Step 2

Why this answer is correct

The correct answer is B. (441). (22!-21!=21!(22-1)). Dividing by (20!) gives \(21\times21=441\).

Step 3

Exam Tip

(22!-21!=21!(22-1)) होता है। (20!) से भाग देने पर \(21\times21=441\) मिलता है।

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Mathematics Answer, Explanation and Revision Hints

\(\frac{22!-21!}{20!}\) का मान क्या है? / What is the value of \(\frac{22!-21!}{20!}\)?

Correct Answer: B. (441). Explanation: (22!-21!=21!(22-1)) होता है। (20!) से भाग देने पर \(21\times21=441\) मिलता है। / (22!-21!=21!(22-1)). Dividing by (20!) gives \(21\times21=441\).

Which concept should I revise for this Mathematics MCQ?

(22!-21!=21!(22-1)). Dividing by (20!) gives \(21\times21=441\).

What exam hint can help solve this Mathematics question?

(22!-21!=21!(22-1)) होता है। (20!) से भाग देने पर \(21\times21=441\) मिलता है।