द्विपद विस्तार में \(^{n}C_r\) coefficients क्यों आते हैं?
Why do coefficients \(^{n}C_r\) appear in binomial expansion?
Explanation opens after your attempt
A. क्योंकि (r) बार दूसरा पद चुनने के तरीके \(^{n}C_r\) होते हैंBecause there are \(^{n}C_r\) ways to choose the second term (r) times
Concept
In ((a+b)^n) the ways to choose (b) from (r) of the (n) brackets are \(^{n}C_r\). In exams connect coefficient with selection.
Why this answer is correct
The correct answer is A. क्योंकि (r) बार दूसरा पद चुनने के तरीके \(^{n}C_r\) होते हैं / Because there are \(^{n}C_r\) ways to choose the second term (r) times. In ((a+b)^n) the ways to choose (b) from (r) of the (n) brackets are \(^{n}C_r\). In exams connect coefficient with selection.
Exam Tip
((a+b)^n) में (n) brackets से (b) को (r) बार चुनने के तरीके \(^{n}C_r\) हैं। परीक्षा में coefficient को selection से जोड़ें।
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