Quantitative Aptitude - Arithmetic Ability Questions

Simple interest on a certain sum of money for 3 years at 10% per annum is half the compound interest on Rs 6000 for 2 years at 10% per annum. The sum placed on simple interest is

The diagonal of a cube is 192 cm. Its volume in cm3 will be 

What is the value of sin ­7π/4c?

The ratio of the volume of two cylinders is 7 : 3 and the ratio of their heights is 7 : 9. If the area of the base of the second cylinder is 154 sq. cm, then what will be the radius (in cm) of the first cylinder?

An article was sold for Rs. 2,400 at a discount of 20%. Find the selling price, if the discount was 25%.

The LCM of 72 and 84 is:

If x+1x=5,then the value of x1+x+x2 is

If x , y, and z are real numbers such that (x - 3)2 + (y - 4)2 + (z - 5)2 = 0 then (x+y+z) is equal to