The sum of coefficients of integral power of $x$ in the binomial expansion ${\left( {1 - 2\sqrt x } \right)^{50}}$ is :
The sum of coefficients of integral power of $x$ in the binomial expansion ${\left( {1 - 2\sqrt x } \right)^{50}}$ is :
- [JEE MAIN 2015]
- A
$\frac{1}{2}\left( {{2^{50}} + 1} \right)$
- B
$\;\frac{1}{2}\left( {{3^{50}} + 1} \right)$
- C
$\;\frac{1}{2}\left( {{3^{50}}} \right)$
- D
$\;\frac{1}{2}\left( {{3^{50}} - 1} \right)$
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