The sum of the co-efficients of all odd degree terms in the expansion of

Question:

The sum of the co-efficients of all odd degree terms in the expansion of $\left(x+\sqrt{x^{3}-1}\right)^{5}+$ $\left(x-\sqrt{x^{3}-1}\right)^{5},(x>1)$ is-

  1. 0

  2. 1

  3. 2

  4. 5


Correct Option: , 3

Solution:

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