In how many years will be Rs. 2,000 amounts to Rs.2,420 at 10% per annum compound interest ?

Directions: Study the following data and answer the questions. 

The score of students of a class are given as follows :

The number of students whose IQ score is 100 and more is 

Directions: Study the following data and answer the questions. 

The score of students of a class are given as follows :

Number of students whose IQ score is 140 is

Directions : Study the following frequency polygon and answer the questions. Given a line graph showing the number of students passed in Higher Secondary Examination in a school over the years 2008 to 2013.

The decrease in percentage of passed students from 2011 to 2012 approximately is 

Directions : Study the following frequency polygon and answer the questions. Given a line graph showing the number of students passed in Higher Secondary Examination in a school over the years 2008 to 2013.

The increase in percentage of passed students from 2008 to 2011 approximately is 

Directions : Study the following frequency polygon and answer the questions. Given a line graph showing the number of students passed in Higher Secondary Examination in a school over the years 2008 to 2013.

The average of passed students in the years 2008, 2009, 2012 approximately is 

Directions : A bar graph showing the heights of six mountain peaks is given below. Study the bar graph and answer the questions. 

When the heights of the given peaks are written in ascending order, what is the average of the middle two peaks? 

Directions : A bar graph showing the heights of six mountain peaks is given below. Study the bar graph and answer the questions. 

What is the respective ratio of the heights of the highest peak and the lowest peak?