World Year of Physics

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World Year of Physics

Year 2005 is declared as world year of Physics. Year 2005 is the 100'th anniversary of the, "Miraculous Year" 1905. In 1905, world's most famous physicist, "Albert Einstein" wrote articles related to three fields: relativity, quantum theory and Brownian motion.

More details about the, "World Year" can be found at http://www.wyp2005.org/ .

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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World Year of Physics

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