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If the point representing the complex nu...

If the point representing the complex number `z_alpha` is a point on or inside the circle having centre `(0+i0)` and radius `alpha` then maximum value of `|z_1+z_2+……+z_n|=` (A) `(n(n+3))/2` (B) `(n(n+1))/2` (C) `(n(n-1))/2` (D) none of these

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