Question
If D and F exchange their position then after the new
rearrangement what is the position of A with respect to F? Study the following information carefully and answer the given questions: There are nine persons i.e. A, B, C, D, E, F, G, H and I are sitting in a linear row. All of them are facing in the north direction. B sits at the middle of the row. Two persons sit between C and B. E is an immediate neighbour of C and sit at the end of the row. H sits third from the left end of the row. D is an immediate neighbour of H. Number of persons sit to the right of F is equal to the number of persons sit to the left of H. I sits exactly between B and F. At least one person sits between G and A who does not sit at the end of the row.Solution
B sits at the middle of the row. As per this statement, the arrangement will look like this: 
Twopersons sit betweenCand B. Asperthisstatement,therearetwopossiblecases andthearrangementwill look like this: 
EisanimmediateneighbourofCandsit at the end ofthe row. H sits third from the left end of the row.As per this statement, the arrangement will look like this 
DisanimmediateneighbourofH. Asperthisstatement, CASEII willfurthergetsplitintoone more case and the arrangement will look like this: 
Case-2 
NumberofpersonssittotherightofFisequalto the number ofpersonssit to theleft of H. IsitsexactlybetweenBandF. At least one person sits between G andAwho does notsitat theendoftherow. As per this statement, CASE I and CASE II will geteliminated and we will continue with CASE II (A) andthefinal arrangement will look likethis: 
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