Thr ciefficient of x^(n-2) in the polyno...

Thr ciefficient of `x^(n-2)` in the polynomial `(x-1)(x-2)(x-3)"…."(x-n)`, is

`(n(n^2+2) (3n+1))/24`

`(n(n^2 -1)(3n+2))/24`

`(n(n^2+1)(3n+4))/24`

None of these

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