Question
Four persons are painting a house. M is painting the
front of the house. R is in the street behind the house painting the back. J is painting the windows on the north. S is on the south. If M switches places with J and then J switches places with S, where is S now?Solution
Initial positions: M β Front of the house R β Back of the house J β North side S β South side Step 1: M switches with J M moves to the North J moves to the Front Now positions are: M β North J β Front R β Back S β South Step 2: J (now at the Front) switches with S (at the South) J moves to the South S moves to the Front Final positions: M β North R β Back J β South S β Front Final Answer: Front S is now at the front of the house.
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