Quantitative Aptitude - Arithmetic Ability Questions

If 192 pens cost is Rs.10, how many pens can be bought for Rs.5?

Twenty one times of a positive number is less than its square by 100. The value of the positive number is

Which of the following numbers is a perfect square?

In a mixture of milk and water, there is 19% milk. If the quantity of milk in the mixture is 437 mililitres, then what is the total quantity (in millilitres) of mixture?

At least one diagonal bisects the other in a _____.

An equilateral triangle of area 300 cm2 is cut from its three vertices to form a regular hexagon. Area of hexagon is what percent of the area of triangle?

In the following question, select the odd word from the given alternatives.

The areas of two similar triangles ΔABC and ΔPQR are 36 sq cms and 9 sq cms respectively. If PQ = 4 cm then what is the length of AB (in cm)?