Quantitative Aptitude - Arithmetic Ability Questions

The angle of elevation of an aeroplane as observed from a point 30 m above the transparent water-surface of a lake is 30° and the angle of depression of the image of the aeroplane in the water of the lake is 60°. The height of the aeroplane from the water-surface of the lake is

Three numbers are given in which the second is triple the first and is also double the third. If the average of the three numbers is 66. Find the first number.

What can be the maximum number of common tangent which can be drawn to two non-intersecting circles?

Find the total surface area (in cm²) of a right circular cylinder of diameter 28 cm and height 12 cm.

In the following question, four groups of three numbers are given. In each group the second and third number are related to the first number by a Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

Out of three pipes the first two can fill an empty tank in 9 and 18 hours, respectively while the third can drain the filled tank in 15 hours. If all the three pipes are opened when the tank is empty, after how many hours will the tank be full?

Find the total Simple Interest on Rs. 500 at 7% per annum, on Rs. 700 at 10% per annum and on Rs. 1000 at 4% per annum for 3 years.

What will be the cost of levelling a circular ground of diameter 28 m, if charges are Rs. 125 per sq.m?