In a row facing north, Mahesh is 14th from the left end and Nikita is 17th from the right end. When they interchange places, Mahesh becomes 20th from the left end. What is Nikita's new position from the right end?

Explanation

1. 01

   Mahesh's new place is 20th from the left and 17th from the right, so the row has $20 + 17 - 1 = 36$ people.

2. 02

   Nikita moves into Mahesh's old place, 14th from the left.

3. 03

   From the right $= 36 - 14 + 1 = 23$.