The area of a square is 40.5 cm². Find the length of its diagonal (in cm).

The line graph shows the number of students of a certain university who failed in the given year in their final exams. Study the diagram and answer the following questions.

What is the average number of failures in the last three years?

The line graph shows the number of students of a certain university who failed in the given year in their final exams. Study the diagram and answer the following questions.

The line graph shows the number of students of a certain university who failed in the given year in their final exams. Study the diagram and answer the following questions.

What was the difference in failures between the years 2011 and 2013?

The line graph shows the number of students of a certain university who failed in the given year in their final exams. Study the diagram and answer the following questions.

In which year were failures greater than that of the previous year?

A train is moving at the speed of 36 km/hr. How many seconds it will take to cover a distance of 600 meters?

Two pipes can fill a cistern in 28 and 21 hours respectively and an another pipe can empty 30 gallons of water per hour. All the three pipes working together can fill the empty cistern in 84 hours. What is the capacity (in gallons) of the cistern?

Which of the following statements is/are TRUE?