CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

The sum Sn=nk=0(1)K.3nCk, is
 
  1. None of these


Solution

The correct option is D
Sn=3nC03nC1+3nC2+.....+(1)n.3nCnBut3nC0=3n1C03nC1=3n1C03n1C13nC2=3n1C1+3n1C23nC3=3n1C23n1C3............................(1)n.3nCn=(1)n.3n1C1+(1)n.3n1Cn
On adding we get Sn=(1)n.3n1Cn

flag
 Suggest corrections
thumbs-up
 
0 Upvotes


Similar questions
View More


People also searched for
View More



footer-image