TYPICAL QUESTIONS & ANSWERS PART – I OBJECTIVE TYPES QUESTIONS Each Question carries 2 marks. Choose correct or the best alternative in the following: Q.1 The co-ordinates of the middle points of the sides of a triangle are (4, 2) (3, 3) and (2, 2). Then the co-ordinates of the centroid are (A) . (B) (3, 3). (C) (4, 3). (D) (4, 7). Ans: A Coordinate of the Centroid is Coordinate of the centroid = Q.2 If x, 2x +2, 3x + 3 are first three terms of a G.P. then its 4 th term is (A)27. (B) -27. (C) 13.5. (D) -13.5. Ans: D If x = -1 then three terms are -1, 0, 0 If x = -4 then the first three terms are -4, -6, -9 Therefore common ratio is 4 th terms = -13.5 Q.3 The angle made by any diameter of a circle at any point on the circumference is (A) 90° (B) 180° (C) 45° (D) 60° Ans: D