Comprehension Passage
Directions: Study the bar graph carefully and answer the following questions.
The bar graph given below represents the number of stock investors (in million) registered with the four exchanges during the year 2020 and 2021.
What is the difference between the average number of investors in all the stock exchanges during the year 2021 and 2020?
1
7.1 million
2
6.4 million
3
9.5 million
4
8.4 million
5
7.5 million