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Given the passage, is the data sufficient to answer the question?
Only I is sufficient
Only II is sufficient
Both I and II are needed
Neither I nor II is sufficient
Both I and II are needed
Test each statement independently first. If neither alone fixes all positions, combine them to test remaining arrangements.
Test each statement independently first. If neither alone fixes all positions, combine them to test remaining arrangements.
Analyze Statement I
Statement I states that Q sits second to the left of P, and R sits at one of the ends. With 6 positions, this leaves multiple possibilities for the remaining friends (S, T, U) and does not uniquely determine who is at the extreme right end.
Analyze Statement II
Statement II states that S sits immediate right of U, and T sits between P and U. This gives relative positioning like P-T-U-S, but without knowing the absolute ends or positions of R and Q, we cannot determine the full row.
Combine Both Statements
Combining Statement I and II: R is at one end. With T between P and U, and S immediate right of U (sequence P-T-U-S or similar), and Q second to the left of P, we can uniquely fix the entire row of 6 friends facing north to find who sits at the extreme right end.
A: Only I is not sufficient because it leaves multiple seating possibilities. B: Only II is not sufficient because absolute positions and ends are unknown. D: Neither is incorrect because combining them successfully solves the arrangement.
C is correct because both Statement I and Statement II are required together to uniquely determine the positions of all six friends and find who sits at the extreme right end.
In data sufficiency seating puzzles, always check each statement independently before trying to combine them to save critical time in exams.
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