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Directions:- Study the following information carefully to answer the question given below.

A, B, C, D, E, G and I are seven friends who study in three different standards namely 5th, 6th and 7th such that not less than two friends study in the same standard. Each friend also has a different favourite subject namely History, Civics, English, Marathi, Hindi, Maths and Economics but not necessarily in the same order.
A likes Maths and studies in the 5th standard with only one other friend who likes Marathi. I studies with two other friends. Both the friends who study with I like languages (Here, language include only Hindi, Marathi and English). D studies in the 6th standard with only one person and does not like civics. E studies with only one friend. The one who likes History does not study in 5th or 6th standard. E does not like languages. C does not like English, Hindi or Civics.

Which of the following is I's favourite subject?
  1. Either English or Marathi
  2. Either English or Hindi
  3. History
  4. Civics
  5. Marathi


Solution

The correct option is C History
Consider the important information (Primary information) that give clear clues.
(i) A likes Maths and studies in 5th standard with only one friend.
(ii) D does not like Civics and studies in 6th standard.
(iii) According to information, A and D do not like history as they study in 5th and 6th standards respectively.
(iv) E does not like languages and studies with only one friend.
(v) C does not like English. Hindi or Civics.
(vi) A and D are not in the same standard.
Now we consider the facts (second information) that are not given but definitely follow :
(i) E, I and C cannot study in the same standard as E does not like languages and C does not like English.
From here we can deduce that I, B and G study in 7th standard. Information says that A studies with one friend in 5th standard and D studies with one friend in 6th standard. Also E and I cannot study in the same standard as I's friends like languages.
(ii) Friends of I, that is, B and G like languages (Marathi. English and Hindi). Definitely, I studies History because no student of 5th and 6th standards studies history.
Now we can construct a Table as follows :
ABCDEGISubjectHistoryXXXXXXCivicsXXXXXXEnglishXXXXXMarathiXXXXXXHindiXXXXXMathsXXXXXXEconomicsXXXXXXStandard5thXXXXX6thXXXXX7thXXXX
As we see there are four blank spaces that indicates B or G studies English or Hindi. It cannot be said definitely who (B or G) studies which languages (English or Hindi).

Now, we can answer the questions of the above example:-

I's favourite subject is History
Hence required answer is (A).

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