If $\sum\limits_{ k =1}^{31}\left({ }^{31} C _{ k }\right)\left({ }^{31} C _{ k -1}\right)-\sum\limits_{ k =1}^{30}\left({ }^{30} C _{ k }\right)\left({ }^{30} C _{ k -1}\right)=\frac{\alpha(60 !)}{(30 !)(31 !)}$ જ્યાં $\alpha \in R$, હોય, તો $16 \alpha$ નું મૂલ્ય...........છે

  • [JEE MAIN 2022]
  • A

    $1411$

  • B

    $1320$

  • C

    $1615$

  • D

    $1855$

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  • [IIT 1971]

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  • [JEE MAIN 2022]