In a row of girls, Kavya is fifth from the left and Parishi is sixth from the right. When they exchange their positions, then Kavya becomes thirteenth from the left. What will be Parishi’s position from the right?

14th

Thus, the row consists of (12 + 1 + 5) = 18 girls. 
Now, Parishi’s new position is Kavya’s earlier position which is 5th from the left. 
Number of girls to the right of Parishi = (18 – 5) = 13
So, Parishi’s new position is 14th from the right.