UPSC Prelims 2013·CSAT·Logical Reasoning·Arrangement and Puzzles

Five cities P, Q, R, S and T are connected by different modes of transport as follows: P and Q are connected by boat as well as rail. Sand R are connected by bus and boat. Q and T are connected by air only. P and R are connected by boat only. T and R are connected by rail and bus. Which one of the following pairs of cities is connected by any of the routes directly without going to any other city?

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Last updated 8 Jul 2026, 4:39 pm IST
  1. AP and T
  2. BT and S
  3. CQ and R
  4. DNone of theseCorrect

Explanation

Let's list the direct connections provided:

  1. P and Q are connected (boat, rail).
  2. S and R are connected (bus, boat).
  3. Q and T are connected (air).
  4. P and R are connected (boat).
  5. T and R are connected (rail, bus).

Now, let's check each option:

A) P and T: The given information states P is connected to Q and R. T is connected to Q and R. There is no direct connection mentioned between P and T.

B) T and S: The given information states T is connected to Q and R. S is connected to R. There is no direct connection mentioned between T and S.

C) Q and R: The given information states Q is connected to P and T. R is connected to S, P, and T. There is no direct connection mentioned between Q and R.

Since none of the pairs in options A, B, or C are directly connected according to the provided information, the correct answer is D) None of these.

Logical Reasoning: Five cities P, Q, R, S and T are connected by different modes of transport as follows: P and Q are connected by boat as
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