The average of twenty-five numbers is 54. The average of the first 13 numbers and that of the last 13 numbers is 52.8 and 62.2, respectively. If the 13th number is excluded, then what is the average of the remaining numbers (correct to one decimal place)?

In the given question, two equations numbered l and II are given. Solve both the equations and mark the appropriate answer.

I. x² + 31x + 240 = 0

II. 5y²+ 60y + 135 = 0

If    then the value of a³ + b³ is 

Direction: Study the given pie chart carefully and answer the following questions accordingly. Given pie chart shows the percentage of players taking part in six different games in an event.

Total number of Players = 1800

If the percentage of Golf players is increased by 50% and the percentage of Basketball players decreased by 25%, then what will be the new total number of Golf and Basketball players together?

Direction: What approximate value will come in place of the question mark (?) in the following question? (You are not expected to calculate the exact value)

1728 ÷ ? + 149.98 × 25.15 = 3156 - 269.75

Directions : Study the following pie chart carefully and answer the questions. The pie chart represents the percentage of people involved in various occupations.
Total number of people = 20000

The ratio of the people involved in service to that in industry is 

Directions : The bar graph, given here, shows the demand and production of colour televisions of five companies for Diwali season in the year 2009. Study the graph carefully and answer the questions based on the graph.

The production of colour televisions of company D is how many times that of company A ?

A hemispherical tank full of water is emptied by a pipe at the rate of 7.7 litres per second. How much time (in hours) will it take to empty part of the tank, if the internal radius of the tank is 10.5 m?