Quantitative Aptitude - Arithmetic Ability Questions

To cover a distance of 333 km in 2 hours by a car, what should be the average speed of the car (in meter/second)?

The sum of the lengths of the edges of a cube is equal to the perimeter of a square. If the numerical value of the volume of the cube is equal to the numerical value of the area of the square, then the length of one side of the square is

In an army selection process, the ratio of selected to unselected was 6:1. If 90 less had applied and 30 less selected, the ratio of selected to unselected would have been 8:1. How many candidates had applied for the process?

The angle of elevation of the top of a tower from a point A on the ground is 30°. On moving a distance of 20 metres towards the foot of the tower to a point B, the angle of elevation increases to 60°. The height of the tower in meters is

If cotA/√(1 + cot2A) = x, then the value of x is

If  C+1C = 3, then what is the value of C3+1C3 = ?

If √(1+tan2A) = x, then the value of x is