Quantitative Aptitude - Arithmetic Ability Questions

The least number that must be substracted from 63520 to make the result a perfect square is

A man buys 10 oranges for Rs. 3 and sells 8 for Rs. 3. Calculate his gain percent.

Smaller diagonal of a rhombus is equal to length of its sides. If length of each side is 6 cm, then what is the area (in sq.cm) of an equilateral triangle whose side is equal to the bigger diagonal of the rhombus?

How many balls of radius 2 cm can be made by melting a bigger ball of diameter 16 cm? (Take π = 22/7)

For what value of 'y', x2 + 112x + y2 is a perfect square?

Simple interest on a certain sum of money for 3 years at 16% per annum is half the compound interest on Rs. 12000 for 2 years at 10% per annum. The sum placed on simple interest is

On selling 120 bottles, Vijay earns profit equal to the cost price of 10 bottles. What is the profit percentage?

Complete the number series by choosing the missing terms from the options. 32, 64, 256, 1536, ? ,122880,1474560