The given bar graph shows the heights of six mountain peaks. Study the graph and the following questions.

The difference between the height of highest and smallest mountain peak is _____

Table- I and table II shows the number of government employees in some cities. Study the table and answer the following questions.

Which of the following is the correct representation of the number of employees in Mumbai?

The pictograph shows different subject book which kept in a library. Study the photograph, answer the following questions.

How many more science books than History books are there in the library?

The marks (out of $10$) obtained by $28$ students in a mathematics test are listed as below:

$8,1,2,6,5,5,5,0,1,9,7,8,0,5,8,3,0,8,10,10,3,4,8,7,8,9,2,0$

The number of students who obtained marks more than or equal to $5$ is ____