Grade 12AlgebraSolve this question by using binomial theorem and it's rule only. Sushant Prasad 6 Years agoGrade 12
Sanyam Shah6 Years agoAnswer: s=∑r/ncr Write it as : s=∑(n-r)/ncr Add both of them 2s=∑n/ncr 2s/n=∑1/ncr=An Therefore 2s/n is your answer Please approve it
Vikas TU6 Years agoDear student Hope your doubt gets cleared Please refer https://www.askiitians.com/iit-study-material/iit-jee-mathematics/algebra/binomial-theorem/