In a row of people, all facing south, Pallavi is second from the left end. Sathvik is seventh from the right end. Riya is exactly between Pallavi and Sathvik. If Riya is fifteenth from the right end, how many people are there in the row?

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?