What is Suman’s rank from the top in a class of forty students?
I. Suman is 3 ranks below Deepak from the top.
II. Deepak’s rank from the bottom is 23.
III. Suman is 3 ranks above Deepak from the bottom.
|A||Any two of the three|
|B||Only I and II|
|C||Only II and III|
|D||All I, II and III|
|E||Only II and either I or III|
From II, we conclude that in a class of 40, Deepak ranks 23rd from the bottom i.e. 18th from the top. From I and II, we find that Suman is 3 ranks below 18th rank from the top i.e. she ranks 21st from the top. From II and III, 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.