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If z1, z2, z3 are three complex, number...

If `z_1, z_2, z_3` are three complex, numbers and `A=[[a r g z_1,a r g z_3,a r g z_3],[a r g z_2,a r g z_2,a r g z_1],[a r g z_3,a r g z_1,a r g z_2]]` Then `A` divisible by `a r g(z_1+z_2+z_3)` b. `a r g(z_1, z_2, z_3)` c. all numbers d. cannot say

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