1.

The co-efficient of x `x^(n-2)` in `(x-1)(x-2)(x-3)(x-n)` is :A. `(n(n^(2)+2)(3n+1))/(24)`B. `(n(n^(2)-1)(3n+2))/(24)`C. `(n(n^(2)+1)(3n+4))/(24)`D. None of these

Answer» Correct Answer - A


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