In a row of 43 people facing north, Kumar is 29th from the left end while Mohana is 9th from the right end. How many people are there between Kumar and Mohana?

Abhishek ranked 17th from the top and 49th from the bottom in his class. How many students are there in his class?

In a row of 55 people facing north, Nalini sits 20th from the right end. If Ranjit sits 18th from the left end of the line, how many people sit between Nalini and Ranjit?