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In a row of five buildings - P, Q, R, S and T, which building is in the middle ?

Statements:

1. Buildings S and Q are at the two extreme ends of the row.

2. Building ,T is to the right of building R.

  • A.1 alone is sufficient while 2 alone is not sufficient
  • B.2 alone is sufficient while 1 alone is not sufficient
  • C.Either 1 or 2 is sufficient
  • D.Neither 1 or 2 is sufficient

Answer: D

Correct answer: Neither 1 or 2 is sufficient

Statement 1 fixes S and Q at the two ends but leaves P, R and T to fill the three middle places in any order. Statement 2 gives only a relative position for T and R. Together they still admit more than one arrangement of the middle three, so the central building cannot be named.

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