This old saying says a lot about preparation for JEE. Break a subject in topics, and do the topics deeply. It is the depth that matters in JEE. Once topics are done thoroughly the subject is automatically taken care of. A suject is like a large organisation, in which topics are different departments. If different departments work well, the organisation works well automatically.
If the sum of the coefficients in the expansion of $(x+y)^n$ is 4096, then the greatest coefficient in the expansion is _ _ _ _ . Solution $C_0 + C_1 + C_2 + C_3 + ......................... + C_n =4096 $ $\therefore 2^n = 4096 =2^{12} $ $\Rightarrow n = 12 $ Greatest coefficient = ${}^{12}{C_6} = 924$