In a row of 54 people facing north, Geeta sits 19th from the left end. If only 19 people sit between Barun and Geeta, then what is Barun's position from the right end of the line?

In a row of 48 people facing north, Pari is 13th from the right end. If Vivek sits 16th to the left of Pari, what is Vivek's position from the left end of the line?

Dayanand ranked 17th from the top and 11th from the bottom in his class. How many students are there in the class?