\(\frac{22!-21!}{20!}\) का मान क्या है?
What is the value of \(\frac{22!-21!}{20!}\)?
Explanation opens after your attempt
B. (441)
Concept
(22!-21!=21!(22-1)). Dividing by (20!) gives \(21\times21=441\).
Why this answer is correct
The correct answer is B. (441). (22!-21!=21!(22-1)). Dividing by (20!) gives \(21\times21=441\).
Exam Tip
(22!-21!=21!(22-1)) होता है। (20!) से भाग देने पर \(21\times21=441\) मिलता है।
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