In a row of students, Reeta is 11th from the right and Madhuri is 14th from the left. Riya is exactly in the middle of Reeta and Madhuri. If there are 16 students in total in the row, what is Riya's position from the left?

In a row of 47 people facing north, Umesh is 15th from the right end. If Ketan sits 19th to the left of Umesh, what is Ketan's position from the left end of the line?

Jhanvi ranked 14th from the top and 6th from the bottom in her class. How many students are there in the class?