The sum of coefficients of integral powers of x in the binomial expansion of

eSaral Updated on:
Question:

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

  1. $\frac{1}{2}\left(3^{50}-1\right)$

     

  2.  $\frac{1}{2}\left(2^{50}+1\right)$

  3. $\frac{1}{2}\left(3^{50}+1\right)$

  4. $\frac{1}{2}\left(3^{50}\right)$

Correct Option: , 3

Solution:

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