Quantitative Aptitude - Arithmetic Ability Questions

O is the center of the circle and two tangents are drawn from a point P to this circle at points A and B. If ∠AOP = 50°, then what is the value (in degrees) of ∠APB?

Pipes A and C can fill an empty cistern in 32 and 48 hrs, respectively while Pipe B can drain the filled cistern in 24hrs. If the three pipes are turned on together when the cistern is empty, how many hrs will it take for the cistern to be 2/3 full?

The least number that must be subtracted from 202 to make it a perfect square is

Suppose that the medians BD, CE and AF of a triangle ABC meet at G. Then AG: GF is

The height of a cone is 24 cm and the area of the base is 154 cm2 . What is the curved surface area (in cm2) of the cone?

A cylindrical vessel of radius 4 cm contains water . A solid sphere of radius 3 cm is dipped into the water until it is completely immersed . The water level in the vessel will rise by

If Tan A = 15/8 and Tan B = 7/24, then Tan (A - B) = ?

Find the average of all prime numbers between 20 and 50.