Quantitative Aptitude - Arithmetic Ability Questions

The surface area of a sphere is 5544 cm2. Find its diameter (in cm).

The average age of 27 students of a class is 22. If the age of the teacher is also added to their ages, then the average increases by one. Find the age of the teacher.

The median of the data -3, 4, 0, 4, -2, -5, 1, 7, 10, 5 is

Simple interest on a certain sum of money for 3 years at 18% per annum is half the compound interest on Rs. 9000 for 2 years at 10% per annum. The sum placed on simple interest is:

When Vijay sells 12 pens, he gains the selling price of 2 pens. Calculate his % profit?

The diagonals are not perpendicular in a _____.

Find the curved surface area (in cm2) of a hemisphere of diameter 7 cm.

Which of the following equations has 3 as a root?