\(^{n}C_r\) के formula में (n!) numerator में क्यों आता है?
Why does (n!) appear in the numerator of the formula for \(^{n}C_r\)?
Explanation opens after your attempt
A. क्योंकि शुरुआत में (n) वस्तुओं को क्रम में जमाकर गिना जा सकता हैBecause initially (n) objects can be counted by arranging in order
Concept
(n!) creates a larger ordered count which is corrected by (r!(n-r)!). In exams understand the overcounting correction.
Why this answer is correct
The correct answer is A. क्योंकि शुरुआत में (n) वस्तुओं को क्रम में जमाकर गिना जा सकता है / Because initially (n) objects can be counted by arranging in order. (n!) creates a larger ordered count which is corrected by (r!(n-r)!). In exams understand the overcounting correction.
Exam Tip
(n!) से ordered arrangements की बड़ी गिनती बनती है जिसे (r!(n-r)!) से सही किया जाता है। परीक्षा में overcounting correction समझें।
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