Quantitative Aptitude - Arithmetic Ability Questions

If (1 + cosA)/(1 - cosA) = x, then x is

What are the co­ordinates of the mid point of the segment joining points C(5,­-2) and D(­-1,8).

If x = 5 + 15 - 1 & y = 5 - 15 + 1, then find the value of x2 - y2.

Simplify 81x2 - 49y29x + 7y

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?

A tap can fill a tank in 20 minutes. If a leakage is capable of emptying the tank in 60 minutes, the tank will be filled in

The volume of a sphere is 179.67 cub.cm. Find its diameter (in cm).

If the simple interest on a sum of money for 2 years at 5% per annum is Rs. 50, the compound interest on the same at the same rate and for the same time is:­