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The value of `((30), (0))((30), (10))-((30), (1))((30),( 11)) +(30 2)(30 12)++(30 20)(30 30)=` a. `^60 C 20` b. `^30 C 10` c. `^60 C 30` d. `^40 C 30`

A

`""^(30)C_(11)`

B

`""^(60)C_(10)`

C

`""^(30)C_(10)`

D

`""^(65)C_(55)`

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The correct Answer is:
C
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