Quantitative Aptitude - Arithmetic Ability Questions

The simple interest on a sum of money is 16/25 of the principal. The number of years is equal to the rate of interest per annum. What is the rate (in percentage) of interest per annum?

The radius of a wire is decreased to one-third. If volume remains the same, length will increase by

The value of Sin 60 is

A 25m long ladder is rested on a wall. The foot of the ladder is 7m away from the wall. If the end of the ladder (resting on the wall) slides down 4m, then how far will its foot move away?

In which of the following quadrilaterals only one pair of opposite angles is supplementary?

The angle of elevation of the top of a pillar from the foot and the top of a building 20 m high, are 60° and 30° respectively. The height of the pillar is

If sin 30° + cos 45° = X, then the value of X.

A cone is hollowed out of a solid wooden cube of side 6 cm. The diameter and height of the cone is same as the side of the cube. What is the volume of the remaining cube?