Meena and Reena are ranked 7th and 11th from the top, respectively, in a class…

Concept

In a list of N people, the top rank and bottom rank of the same person include that person in both counts.

Therefore, top rank + bottom rank = N + 1, or bottom rank = N - top rank + 1.

Application

1. Here N = 41.

2. For Meena, bottom rank = 41 - 7 + 1 = 35.

3. For Reena, bottom rank = 41 - 11 + 1 = 31.

Cross-check

For each person, top rank + bottom rank must equal 42. Meena: 7 + 35 = 42; Reena: 11 + 31 = 42.

Result

Their respective ranks from the bottom are 35 and 31.