Let $[t]$ denotes the greatest integer $\leq t$. If the constant term in the expansion of $\left(3 x^2-\frac{1}{2 x^5}\right)^7$ is $\alpha$, then $[\alpha]$ is equal to $............$.

  • [JEE MAIN 2023]
  • A

    $1274$

  • B

    $1275$

  • C

    $1273$

  • D

    $1272$

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  • [JEE MAIN 2024]

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