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Mathematics · 2015
JEE Main 2015 · 2015-04-04 Offline · Q67
The sum of coefficients of integral powers of x in the binomial expansion of (1-2 √ x )^50 is:
The sum of coefficients of integral powers of $\displaystyle x$ in the binomial expansion of $\displaystyle (1-2 \sqrt{x})^{50}$ is :
Official answer
(1)
$\displaystyle \frac{1}{2}\left(3^{50}+1\right)$
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JEE Main 2015 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.