Quantitative Aptitude - Arithmetic Ability Questions

One of four words is a class to which the other three belong. Identify the class.

The perimeter of a square is 30 cm. Find its area (in cm²).

The difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 12% per annum is Rs 900. What is the value of given sum (in Rs)?

Find the value of 27a3 + 1a3, if 9a2 + 1a2 = 43

If curved surface area of a cylinder is 1320 sq cm and height is 10 cm, find its radius?

If x4+1x4=119,then the value of x-1x is

The average of 17 results is 60. If the average of first 9 results is 57 and that of the last 9 results is 65, then what will be the value of 9th result?

The length of the base of an isosceles triangle is 2x­2y+4z, and its perimeter is 4x­2y+6z. Then the length of each of the equal sides is