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Congratulations to Siddharth Saxena for his success in NTSE Phase I. 190 students have been successful from M.P. in the year 2004. Siddharth has also secured All India Rank 607 in Unified Council National Level Exam Class X. Siddharth is a student of St Joseph's Co. Ed. School, Bhopal.

Sum of the coefficients in the expansion of $(x+y)^n$ ....

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 = ${}^{12}{C_6} = 924$

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Sum of the coefficients in the expansion of $(x+y)^n$ ....