The value of $\frac{1}{1 ! 50 !}+\frac{1}{3 ! 48 !}+\frac{1}{5 ! 46 !}+\ldots .+\frac{1}{49 ! 2 !}+\frac{1}{51 ! 1 !}$ is :

Question

$\frac{2^{51}}{50 !}$

$\frac{2^{51}}{51 !}$

$\frac{2^{50}}{50 !}$

$\frac{2^{50}}{51 !}$

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