Anjana ranked 15^th from the top and 28^th from the bottom among those who passed an examination. Five girls did not participate in the exam and four failed in it. How many girls were there in the class ?

51

Anjana's Position  =  15^th from the Top and 28^th from Bottom

Total students who passed  =  Top Rank + Bottom Rank – 1

Total Pass  =  28 + 15 – 1

                   =  42

                   +  4             (Failed)

                   +  5             (Not participated)

                       51