\(^{n}C_r\) की व्युत्पत्ति में (r!(n-r)!) से भाग देने का grouped meaning क्या है?
What is the grouped meaning of dividing by (r!(n-r)!) in the derivation of \(^{n}C_r\)?
Explanation opens after your attempt
A. दो groups के अंदर के क्रम हटानाRemoving orders inside two groups
Concept
In (n!), internal orders of chosen and unchosen groups are counted separately. In exams remove internal order in group division.
Why this answer is correct
The correct answer is A. दो groups के अंदर के क्रम हटाना / Removing orders inside two groups. In (n!), internal orders of chosen and unchosen groups are counted separately. In exams remove internal order in group division.
Exam Tip
(n!) में चुने और न चुने groups के internal orders अलग गिने जाते हैं। परीक्षा में group division में internal order हटाएँ।
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