In a row of children, Nisha is 8th from the left and Arun is 11th from the right. When they exchange their places, Nisha will be 13th from the left end. Which of the following will be the new position of Arun from the right end ?

16

Total number of students = position of Arun before interchange + position of Nisha after interchange -1

                                     = 11 +  13 - 1 = 23

Position of Arun after interchange from right end =  23 - 8 +1= 16