The average of the squares of first ten natural numbers is 

The area of a triangle with vertices A (0, 8), O (0, 0), and B (5, 0) is :

If a man purchase 11 articles for Rs.10 and sold all the articles at the rate of 10 for Rs.11, the profit percentage will be.

At the angle the hands of a clock are inclined at 15 minutes past 5?

The number of integers in between 100 and 600, which are divisible by 4 and 6 both, is: 

The twice of sum of the ages of a father and his son is 8times the age of the son. If the average age of the father and the son is 28 years, what is father's age? 

Direction: Study the following graph carefully and answer the questions that follow:
The graph given below represents the number of users of two broadband services A and B across 5 cities P, Q, R, S and T.

What is the respective ratio of the number of users of brand A in city P to the number of users of brand B in the City S?

Pipes  A and B are emptying pipes and can empty a tank in 6 hours and 16 hours, respectively. C is a filling a pipe. All the three pipes were opened together. They took 80 minutes to empty $$ {5\over 8}th$$ of the tank. Pipe C alone can fill the tank in: