What is Suman's rank from the top in a class of forty students ?
Statements:
1. Suman is 3 ranks below Deepak from the top.
2. Deepak's rank from the bottom is 23.
3. Suman is 3 ranks above Deepak from the bottom.
Answer: D
From 2, we conclude that in a class of 40, Deepak ranks 23rd from the bottom i.e. 18th from the top.
From 1 and 2, we find that Suman is 3 ranks below 18th rank from the top i.e. she ranks 21st from the top.
From 2 and 3, we find that Suman is 3 ranks above 23rd rank from the bottom
i.e. she ranks 20th from the bottom or 21st from the top.