Quantitative Aptitude - Arithmetic Ability Questions

A prism has a regular hexagonal base with side 6 cm. If the total surface area of prism is 216√3 cm2, then what is the height (in cm) of prism?

Four numbers A, B, C and D are such that their overall average is 16. The average of A and B is 9.5. The average of C and D is

Calculate the difference between the square of the largest and smallest two-digit prime numbers.

The length and breadth of a rectangle are 15 cm and 8 cm respectively. Find its area (in cm2)

Aparna changes the marked price of an item to 50% above its C.P. What % of discount allowed in approximately to gain 10%?

Mr. Devesh borrowed Rs.4,500 at 4% per annum compound interest. The compound interest compounded annually for 2years is

Find the value of  y(y4 - y2 - y) when y = 5.

The difference between the ages of mother and son was 21 when mother's age was 43. If father is elder by 3 years to mother, what will be the difference between the ages of son and father when father attains 50 years?