In a row of people, Ajay is 7th from bottom end of row. Sham is 13 ranks above Ajay . If Sham is 10th from top, then how many people are there in this row ?

29

Ajay is 7th from bottom end of row and Sham is 13th rank above ajay

therefore

Sham is 20th from bottom

Sham is 10th from top

Total number of people in a row = top + bottom -1

                                                   = 20 + 10 - 1

                                                   = 29