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JEE-Mains 2015 (7/30)

Algebra Level 4

The sum of coefficients of integral powers of $x$ in the binomial expansion of $(1-2\sqrt{x})^{50}$ is :

\frac{1}{2}(3^{50})

\frac{1}{2}(2^{50}+1)

\frac{1}{2}(3^{50}+1)

\frac{1}{2}(3^{50}-1)

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by Sandeep Bhardwaj

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