Gate Exam

Let α, β and γ be the cube roots of p (p < 0). For any real numbers x, y and z, the value of (xα+yβ+zγ) ⁄(xβ+yγ+zα) is

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Gate Other Question

The number of roots of equations z15 = 1 and Iarg zI< π/2 is If A and B are two independent events such that and P(A'∩B)=2/7 and P(A∩B')=1/5, then P(A) is