Linear Arrangement with unknown no. of persons [must do for SBI PO/RRB PO/RBI GRADE B PRE]

Few persons were seated across a straight row facing the north.

• A was 2nd to the left of F's neighbor
 • F and D were seated at a gap of 3 persons
 • D was seated at either of the extreme ends
 • E was seated exactly in the middle of the row
• Number of persons seated to the right of F was one more than the number of persons to the left of A
• B was seated 2nd from the left end of the row.

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