In a competitive exam data interpretation problem, the population of six countries in 2010 and 2020 was analyzed. If the minimum percentage increase among all countries is 16.92% and the maximum percentage increase is 27.5%, what is the range interval spanning the percentage increases in population across all these countries from 2010 to 2020?

In a data table, the production of rice for country Q and country R is 60 lakh tons and 54 lakh tons respectively. The production of wheat for country S and country T is 52 lakh tons and 52 lakh tons respectively. What is the ratio of the total production of rice of countries Q and R to the total production of wheat of countries S and T?

In a survey of 5 countries (P, Q, R, S, T), the rice production values are 40, 60, 54, 70, and 51 lakh tons respectively. What is the average production of rice (in lakh tons) across all 5 countries?