A 25m long ladder is rested on a wall. The foot of the ladder is 7m away from the wall. If the end of the ladder (resting on the wall) slides down 4m, then how far will its foot move away?
The line graph shows the number of students who passed with distinction in the given year from a certain university. Study the diagram and answer the following questions.
In which year were number of students who passed with distinction were lesser than those who passed in the previous year?