Quantitative Aptitude - Arithmetic Ability Questions

A mason can build a wall in 18 hours. After 9 hours he takes a break. What fraction of the wall is yet to be built?

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

Pipes A and B, when working together, can fill an empty tank in 8 hours. If B is stopped after 2 hours, it will take a total of 11 hrs to fill the tank. How long would it take A to fill the empty tank alone?

What is the value of sin(11π/6)?

The difference between compound interest and simple interest on a certain sum of money for 2 years at 5% per annum is Rs. 41. What is the sum of money?

Select the odd word/letters/number/number pair from the given alternatives.

Find the area (in sq.cm) of a semi-circle of radius 7 cm

In the following question, select the odd number pair from the given alternatives.