The area of the polygon, whose vertices are the non-real roots of the equation -iz is: 1. 33 (a) 4 2. 33 (b) 2 (c) 3/23 (d) 31 Le the system of linear equations x + 2y + z = 2, ax + 3y-za, ax + y + 2z = - be inconsistent. Then a is equal to: 52 (a) 2 (b) 5 -- 2 (c) 2 (d) -- 2 00 3. If x=a, y=b, z= c^, where a, b, c are in A.P. and |a|