C° , C1 , C2, ......., Cn represents the coeffecients in the expansion of (1+x)n
then find the value of
C°Cr + C1Cr+1 + C2Cr+2+ .................. + Cn-rCn
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3 Answers
62this is the coefficient of n-r in the expansion of
this is the coefficient of n in the expansion of
(1+x)n.(x+1)n
Is this part clear to you..
Aman this is one of the first problems of this chapter... And a very basic and important one tooo... this will allow you to solve much tougher problems of the kind...
Make sure u understand this one.
good luck..
