The Coefficient of x 9 in ( x − 21 C 0 ) ( x − 21 C 1 ) ( x − 21 C 2 ) …… .. ( x − 21 C 10 ) i s

Coefficient x 10 = sum of products of 20 C 0 , 20 C 1 ………… 20 C 10 . Taking ' 2 ' at a time.

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MathematicsBinomial TheoremProperties of Binomial coefficientsEasy2 min

MathematicsEasysingle choice

The Coefficient of $x^{9}$ in $(x -^{21} C_{0}) (x -^{21} C_{1}) (x -^{21} C_{2}) \dots\dots .. (x -^{21} C_{10}) i s$

Answer:

Solution:

Coefficient $x^{10} =$ sum of products of $^{20} C_{0},^{20} C_{1} \dots\dots\dots\dots^{20} C_{10}$ . Taking ' 2 ' at a time.

Stream:JEESubject:MathematicsTopic:Binomial TheoremSubtopic:Properties of Binomial coefficients

⏱ 2m

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