Question: What is Sumans rank from the top in a class of forty students ?
Statements:
Suman is 3 ranks below Deepak from the top.
Deepaks rank from the bottom is 23.
Suman is 3 ranks above Deepak from the bottom.
Any two of the three
Only I and II
Only II and III
Only II and either I or III
Explanation:
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.
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.