The sum of coefficients of integral power of x in the binomial expansion ( ) 50 12x – is :

Question:

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

JEE Main Previous Year 1 Question of JEE Main from Mathematics Binomial Theorem and its Simple Applications chapter.
JEE Main Previous Year 2015

Solution:

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