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"^(n-1)Cr=(k^2-8)^(n)C(r+1) then k is...

`"^(n-1)C_r=(k^2-8)^(n)C_(r+1)` then k is

A

`2sqrt(3)ltkle3sqrt(2)`

B

`2sqrt(2)ltkle3`

C

`2sqrt(3)ltklt3sqrt(3)`

D

`2sqrt(2)ltklt2sqrt(3)`

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